binkzz
asked on
system interaction
Hi!
Say I was wanting to create a small personal systems macro editor. I'd need to be able to read screen content, and be able to use the mouse freely outside my own application. How would I do this in Delphi?
Mr B
Say I was wanting to create a small personal systems macro editor. I'd need to be able to read screen content, and be able to use the mouse freely outside my own application. How would I do this in Delphi?
Mr B
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Here's a little bit of code to capture the window underneath your mouse. It will need to be refined a bit, but the basics are here:
This is the main unit:
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
ExtCtrls;
type
TForm1 = class(TForm)
Timer1: TTimer;
Image1: TImage;
procedure Timer1Timer(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.DFM}
procedure TForm1.Timer1Timer(Sender: TObject);
var
Hnd: Integer;
R: TRect;
Window : TCanvas;
BMP: TBitmap;
begin
Timer1.Enabled := false;
Hnd := WindowFromPoint(Mouse.Curs orPos);
if Hnd > 0 then
begin
GetWindowRect(Hnd, R);
BMP := TBitmap.Create;
BMP.Height := R.Bottom;
BMP.Width := R.Right;
Window := TCanvas.Create;
Window.Handle := GetWindowDC (Hnd) ;
With BMP.Canvas do
CopyRect (Rect (0, 0, R.Right, R.Bottom),
Window, Rect (0, 0, R.Right, R.Bottom));
Image1.Picture.Bitmap.Assi gn(BMP);
BMP.Free;
Window.Free;
end;
Timer1.Enabled := true;
end;
end.
and the DFM:
object Form1: TForm1
Left = 263
Top = 145
Width = 696
Height = 480
Caption = 'Form1'
Color = clBtnFace
Font.Charset = DEFAULT_CHARSET
Font.Color = clWindowText
Font.Height = -11
Font.Name = 'MS Sans Serif'
Font.Style = []
OldCreateOrder = False
PixelsPerInch = 96
TextHeight = 13
object Image1: TImage
Left = 30
Top = 24
Width = 421
Height = 375
end
object Timer1: TTimer
Interval = 100
OnTimer = Timer1Timer
Left = 514
Top = 76
end
end
If you need any more help, let me know.
Stu
This is the main unit:
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
ExtCtrls;
type
TForm1 = class(TForm)
Timer1: TTimer;
Image1: TImage;
procedure Timer1Timer(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.DFM}
procedure TForm1.Timer1Timer(Sender:
var
Hnd: Integer;
R: TRect;
Window : TCanvas;
BMP: TBitmap;
begin
Timer1.Enabled := false;
Hnd := WindowFromPoint(Mouse.Curs
if Hnd > 0 then
begin
GetWindowRect(Hnd, R);
BMP := TBitmap.Create;
BMP.Height := R.Bottom;
BMP.Width := R.Right;
Window := TCanvas.Create;
Window.Handle := GetWindowDC (Hnd) ;
With BMP.Canvas do
CopyRect (Rect (0, 0, R.Right, R.Bottom),
Window, Rect (0, 0, R.Right, R.Bottom));
Image1.Picture.Bitmap.Assi
BMP.Free;
Window.Free;
end;
Timer1.Enabled := true;
end;
end.
and the DFM:
object Form1: TForm1
Left = 263
Top = 145
Width = 696
Height = 480
Caption = 'Form1'
Color = clBtnFace
Font.Charset = DEFAULT_CHARSET
Font.Color = clWindowText
Font.Height = -11
Font.Name = 'MS Sans Serif'
Font.Style = []
OldCreateOrder = False
PixelsPerInch = 96
TextHeight = 13
object Image1: TImage
Left = 30
Top = 24
Width = 421
Height = 375
end
object Timer1: TTimer
Interval = 100
OnTimer = Timer1Timer
Left = 514
Top = 76
end
end
If you need any more help, let me know.
Stu
gets full screen bitmap
procedure TForm1.FormShow(Sender: TObject);
var
DeskDC: HDC;
ScreenBmp: TBitmap;
begin
{full screen bitmap}
ScreenBmp := TBitmap.Create;
ScreenBmp.Width := Screen.Width;
ScreenBmp.Height := Screen.Height;
DeskDC := GetDC(0);
BitBlt(ScreenBmp.Canvas.Ha ndle, 0, 0, Screen.Width, Screen.Height, DeskDC, 0, 0, SRCCOPY);
StretchBlt(DeskDC, 0, Screen.Height,
Screen.Width, -Screen.Height, ScreenBmp.Canvas.Handle,
0, 0, Screen.Width, Screen.Height, SRCCOPY);
ReleaseDC(GetDesktopWindow ,DeskDC);
FreeAndNil(ScreenBmp);
end;
if you use windows hDC then creating a Canvas isn't nessary
procedure TForm1.FormShow(Sender: TObject);
var
DeskDC: HDC;
ScreenBmp: TBitmap;
begin
{full screen bitmap}
ScreenBmp := TBitmap.Create;
ScreenBmp.Width := Screen.Width;
ScreenBmp.Height := Screen.Height;
DeskDC := GetDC(0);
BitBlt(ScreenBmp.Canvas.Ha
StretchBlt(DeskDC, 0, Screen.Height,
Screen.Width, -Screen.Height, ScreenBmp.Canvas.Handle,
0, 0, Screen.Width, Screen.Height, SRCCOPY);
ReleaseDC(GetDesktopWindow
FreeAndNil(ScreenBmp);
end;
if you use windows hDC then creating a Canvas isn't nessary
Had some time this weekend, so I took the code for a Journaling hook together for ya. You do Not need to run this code in a .DLL, like other Hooks, you can just put in in your app. I had a very difficult time trying to use the JournalPlaybackProc function, The documentation and examples I had for it were crap (including the borland page above), not really saying what was going on with it and sometimes giving wierd behavior, look at my comments in the code. Here is some code from an app that records keyboard and mouse events and then is able to play them back at another time. It can save the events as a file, to be loaded and played later. I set it so it does not record the 1000's of mouse move messages that are useless in a macro play back. Because the mouse clicks are based on position, I had to check the user's desktop Work Area, to see if the screen Resolution or TaskBar Position had changed.
private
{ Private declarations }
EventMsgArray: Array of TEVENTMSG;
TempBmp: TBitmap;
TimerStr: String;
procedure DrawDesk(DisText: String; Red: Boolean);
var
Form1: TForm1;
Track, SysModal, DoDelay, GotMove: Boolean;
FirstGo: Byte;
StartTime: Cardinal;
TempEvMsg: TEventMsg;
SRect: TRect;
NumMsgs, PlayNum: Integer;
JHook: THandle;
procedure TForm1.FormCreate(Sender: TObject);
begin
NumMsgs := 0;
JHook := 0;
PlayNum := 0;
Track := False;
SysModal := False;
SetLength(EventMsgArray,1) ;
end;
procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
SetLength(EventMsgArray,0) ;
UnhookWindowsHookEx( JHook );
end;
procedure TForm1.ApplicationEvents1M essage(var Msg: tagMSG;
var Handled: Boolean);
begin
{this is the Application OnMessage event.
You need to check for the WM_CANCELJOURNAL message
which will happen if the user presses Ctrl+Esc, Ctrl+Alt+Del and maybe Ctrl+Break}
Handled := False;
if Msg.message = WM_CANCELJOURNAL then
begin
Timer1.Enabled := False;
InvalidateRect(0,@SRect, True);
SetForegroundWindow(Handle );
Perform(WM_SYSCOMMAND,SC_R ESTORE,0);
ShowMessage('Journaling has been canceled');
end;
end;
procedure TForm1.DrawDesk(DisText: String; Red: Boolean);
var
DeskDC, hBrush: Integer;
begin
{I had to remind the user that Journaling was happing,
so I draw a Rect in the lower right corner of the desktop}
if not SystemParametersInfo(SPI_G ETWORKAREA ,0,@SRect, 0) then
SRect := Rect(0,0,Screen.Width,Scre en.Height - 32);
SRect.TopLeft := Point(SRect.Right-158,SRec t.Bottom-6 0);
DeskDC := GetDC(0);
hBrush := 0;
if Red then
begin
hBrush := CreateSolidBrush($000000FF );
SelectObject(DeskDC,hBrush );
SetBkColor(DeskDC,$000000F F);
end;
Rectangle(DeskDC,SRect.Lef t,SRect.To p,SRect.Ri ght,SRect. Bottom);
InflateRect(SRect,-3,-2);
DrawText(DeskDC,PChar(DisT ext),Lengt h(DisText) ,SRect, DT_LEFT or DT_WORDBREAK);
DeleteObject(hBrush);
ReleaseDC(GetDesktopWindow ,DeskDC);
TimerStr := DisText;
Timer1.Tag := 0;
Timer1.Interval := 700;
Timer1.Enabled := True;
end;
function Hook2Proc(Code:integer; wParam: Longint; var EventStrut: TEVENTMSG): Longint; stdcall;
begin
{this is the JournalRecordProc}
Result := CallNextHookEx( JHook, Code, wParam, Longint(@EventStrut) );
if Code < 0 then Exit;
{you should cancel operation if you get HC_SYSMODALON}
if Code = HC_SYSMODALON then SysModal := True
else if Code = HC_SYSMODALOFF then SysModal := False;
if Code = HC_ACTION then
begin
if SysModal then Exit;
if EventStrut.message = WM_KEYDOWN then
begin
if (EventStrut.paramL = 17923) {17923 is for Ctrl+Break}
or (Chr(LOBYTE(LOWORD(EventSt rut.paramL )))='Q') and (GetKeyState(VK_CONTROL) < 0) then
Form1.but_EndMTClick(Form1 ) {Ctrl+Q and Ctrl+Break will End the Journal record}
end else if (Chr(LOBYTE(LOWORD(EventSt rut.paramL )))='S') and (GetKeyState(VK_CONTROL) < 0) then
begin
{Ctrl+S will start the journal record}
if Track = False then
begin
StartTime := GetTickCount;
{It is nessarry to subtract the TickCount to get the amount of ticks between events
I do not use the Event Time in my playback Proc, but you might want to}
FirstGo := 0;
{First go is used to remove the Ctrl and S key up events}
Form1.DrawDesk('JOURNAL NOW RECORDING'#10'Press Ctrl+q to Stop', False);
end;
Track := True;
end;
If Track then
begin
if NumMsgs < 1024 then
{I have limited the event log to 1024 for NO reason
except for those who forget or don't know how to stop
the the journaling}
begin
if EventStrut.message = WM_MOUSEMOVE then
begin
{I found the 1000's of mouse move messages to be
totally useless, so I skip all the Mouse Move messages
except the Last one before another type of event}
TempEvMsg := EventStrut;
GotMove := True;
end else
begin
if GotMove then
begin
GotMove := False;
Form1.EventMsgArray[NumMsg s] := TempEvMsg;
Dec(Form1.EventMsgArray[Nu mMsgs].tim e,StartTim e);
Inc(NumMsgs);
SetLength(Form1.EventMsgAr ray, NumMsgs+1);
end;
if FirstGo < 2 then
if (EventStrut.message = WM_KEYUP) then
begin
{this prevents the Ctrl and s key up from being recorded}
if EventStrut.paramL = 7441 then Inc(FirstGo);
{7441 is Ctrl key}
if Chr(LOBYTE(LOWORD(EventStr ut.paramL) )) = 'S' then Inc(FirstGo);
Exit
end else FirstGo := 2;
Form1.EventMsgArray[NumMsg s] := EventStrut;
Dec(Form1.EventMsgArray[Nu mMsgs].tim e,StartTim e);
Inc(NumMsgs);
SetLength(Form1.EventMsgAr ray, NumMsgs+1);
end;
end;
end;
end;
end;
procedure TForm1.but_StartMTClick(Se nder: TObject);
var
Rect1: TRect;
begin
{this button click starts the Journal Record hook}
if Track then
begin
Messagebox(0,'Mouse tracking has already been started', 'No can Restart', MB_OK or MB_ICONQUESTION);
Exit;
end;
GotMove := False;
FirstGo := 0;
JHook := SetWindowsHookEx(WH_JOURNA LRECORD , @Hook2Proc, 0{hInstance}, 0);
if JHook > 0 then
begin
NumMsgs := 1;
{set NumMsgs to 1 because the first EventMsgArray is used for
file verification and NOT for events}
Track := False;
SysModal := False;
SetLength(EventMsgArray,2) ;
{If the user has changed screen Resolution OR moved the task bar
then the Position of mouse clicks will NOT be correct, So get the
Work Area and record it, so you can compare it later for playback}
if not SystemParametersInfo(SPI_G ETWORKAREA ,0,@Rect1, 0) then
Rect1 := Rect(0,0,Screen.Width,Scre en.Height - 32);
EventMsgArray[0].message := Rect1.Left;
EventMsgArray[0].paramL := Rect1.Top;
EventMsgArray[0].paramH := Rect1.Right;
EventMsgArray[0].time := Rect1.Bottom;
EventMsgArray[0].hwnd := 65432;
Perform(WM_SYSCOMMAND,SC_M INIMIZE or SC_ICON,0);
{I minimaze the main Form so the user can click other things}
DrawDesk('JOURNAL RECORD READY'#10'Press Ctrl+s to Start', False);
end else
ShowMessage('Journal Hook could not be set');
end;
procedure TForm1.but_EndMTClick(Send er: TObject);
var
i: Integer;
begin
{This is an Emergency Stop Journaling button click}
Track := False;
if JHook < 1 then
NumMsgs := 0 else
UnhookWindowsHookEx(JHook) ;
Timer1.Enabled := False;
SetForegroundWindow(Handle );
Perform(WM_SYSCOMMAND,SC_R ESTORE,0);
Application.ProcessMessage s;
InvalidateRect(0,@SRect, True);
Sleep(200);
JHook := 0;
if NumMsgs >1 then
begin
Memo1.Clear;
{start the for loop with 1 because the 0 if for Work Area verification}
for i := 1 to NumMsgs-1 do
begin
case EventMsgArray[i].message of
WM_LBUTTONDOWN: Memo1.Lines.Add('L Down '+IntToStr(EventMsgArray[i ].paramL)+ ' '+IntToStr(EventMsgArray[i ].paramH)+ ' hwnd '+IntToStr(EventMsgArray[i ].hwnd));
WM_LBUTTONUP: Memo1.Lines.Add('L UP '+IntToStr(LOWORD(EventMsg Array[i].p aramL))+' '+IntToStr(HIWORD(EventMsg Array[i].p aramL))+' hwnd '+IntToStr(EventMsgArray[i ].hwnd));
WM_MOUSEMOVE: Memo1.Lines.Add('Move '+IntToStr(EventMsgArray[i ].paramL)+ ' '+IntToStr(EventMsgArray[i ].paramH)+ ' hwnd '+IntToStr(EventMsgArray[i ].hwnd));
WM_RBUTTONDOWN: Memo1.Lines.Add('R Down '+IntToStr(EventMsgArray[i ].paramL)+ ' '+IntToStr(EventMsgArray[i ].paramH)+ ' hwnd '+IntToStr(EventMsgArray[i ].hwnd));
WM_RBUTTONUP: Memo1.Lines.Add('R UP '+IntToStr(EventMsgArray[i ].paramL)+ ' '+IntToStr(EventMsgArray[i ].paramH)+ ' hwnd '+IntToStr(EventMsgArray[i ].hwnd));
WM_KEYDOWN: Memo1.Lines.Add('Key Down '+IntToStr(EventMsgArray[i ].paramL){ Chr(LOBYTE (LOWORD(Ev entMsgArra y[i].param L)))}+' '+IntToStr(EventMsgArray[i ].paramH)+ ' hwnd '+IntToStr(EventMsgArray[i ].hwnd));
WM_KEYUP: Memo1.Lines.Add('Key UP '+IntToStr(EventMsgArray[i ].paramL)+ ' '+IntToStr(EventMsgArray[i ].paramH)+ ' hwnd '+IntToStr(EventMsgArray[i ].hwnd));
else Memo1.Lines.Add('Other '+IntToStr(EventMsgArray[i ].message) +' '+IntToStr(EventMsgArray[i ].paramH)+ ' hwnd '+IntToStr(EventMsgArray[i ].hwnd));
end;
end;
while EventMsgArray[NumMsgs-1].p aramL = 7441 do
begin
{This removes the Ctrl key mouse down repeat messages}
Dec(NumMsgs);
if NumMsgs < 3 then Break;
end;
end else
ShowMessage('No Journal Messages are recorded');
end;
function PlaybackProc(Code:integer; wParam: Integer; var EventStrut: TEVENTMSG): Integer; stdcall;
begin
{this journal playback function is very difficult to understand.
Each event in the EventMsgArray is called here 2 or 3 times or more,
first with a HC_GETNEXT code to get a delay Result, if there is a Delay
Result larger than 0,then the event is NOT Fired, and a HC_GETNEXT is
called again after the delay period. If the Delay Result is 0 then the event
is fired and the HC_SKIP code is called, which advances the PlayNum to the
next EventMsgArray and then it does the HC_GETNEXT to start the loop again.}
Result := 0;
if Code < 0 then
begin
{if code is less than 0 pass it}
Result := CallNextHookEx( JHook, Code, wParam, Integer(@EventStrut) );
Exit;
end;
if Code = HC_SKIP then
begin
if SysModal then Exit;
Inc(PlayNum);
DoDelay := True;
{set this to true to get a Delay in the HC_GETNEXT}
if PlayNum >= NumMsgs-1 then
begin
{this ends the playback}
UnhookWindowsHookEx(JHook) ;
Form1.Timer1.Enabled := False;
Sleep(700);
InvalidateRect(0,@SRect, True);
SetForegroundWindow(Form1. Handle);
Form1.Perform(WM_SYSCOMMAN D,SC_RESTO RE,0);
end;
Exit;
end;
if Code = HC_GETNEXT then
begin
if SysModal then Exit;
Form1.Label3.Caption := 'HC_GETNEXT';
Move(Form1.EventMsgArray[P layNum], EventStrut, SizeOf(TEVENTMSG));
if DoDelay then
begin
Result := 380;
{I tried lots of different combinations of setting the
delay Result, but for playback using a constant between 200 and 1000
seemed best}
//Result := Form1.EventMsgArray[PlayNu m].time;
{Setting the Result to time of EventStrut will simulate the
event timing, more or less}
DoDelay := False;
end; {else
EventStrut.time := 300{EventStrut.time+ StartTime};
{I tried setting this time to different values, but it seems to
have little or No effect}
{unlike many other windows system Proc, this uses the memory value
in the Proc parameter EventStrut (lParam), when this function returns.
Notice that it is declared as a var. You do NOT need to to use
CallNextHookEx, because this is not used like other Hooks, to get messages,
this fires mouse and keyboard events outside of a "hook Chain"}
Exit;
end else
if Code = HC_SYSMODALON then SysModal := True
else if Code = HC_SYSMODALOFF then
begin
SysModal := False;
end;
CallNextHookEx( JHook, Code, wParam, Integer(@EventStrut));
{I'm not sure you need this CallNextHookEx here}
end;
procedure TForm1.but_PlayBackClick(S ender: TObject);
var
i: Integer;
begin
ShowMessage('NumMsgs '+IntToStr(NumMsgs));
if NumMsgs > 0 then
begin
PlayNum := 1;
DoDelay := False;
ReleaseCapture;
SysModal := False;
Form1.Perform(WM_SYSCOMMAN D,SC_MINIM IZE or SC_ICON,0);
DrawDesk('JOURNAL PLAYBACK'#10'Please Wait', False);
StartTime := GetTickCount;
JHook := SetWindowsHookEx(WH_JOURNA LPLAYBACK , @PlaybackProc, 0{hInstance}, 0);
end;
end;
procedure TForm1.sbut_SaveTFileClick (Sender: TObject);
var
SaveFile: File of TEventMsg;
i: Integer;
FileName: String;
begin
if NumMsgs > 1 then
begin
FileName := 'C:\Stuff\Play Journal1.pbj';
AssignFile(SaveFile, FileName);
Rewrite(SaveFile);
for i := 0 to NumMsgs-1 do
Write(SaveFile,EventMsgArr ay[i]);
CloseFile(SaveFile);
end;
end;
procedure TForm1.sbut_LoadTFileClick (Sender: TObject);
var
FileName: String;
LoadFile: File of TEventMsg;
i: Integer;
Rect1: TRect;
begin
FileName := 'C:\Stuff\Play Journal1.pbj';
if FileExists(FileName) then
begin
AssignFile(LoadFile, FileName);
Reset(LoadFile);
NumMsgs := FileSize(LoadFile);
if NumMsgs > 1 then
begin
SetLength(EventMsgArray, NumMsgs);
for i := 0 to NumMsgs-1 do
Read(LoadFile,EventMsgArra y[i]);
CloseFile(LoadFile);
{this is to check the file to see if it is a valid .ppj file for this
version AND to see if the DeskTop work Area matches the file's work area}
if not SystemParametersInfo(SPI_G ETWORKAREA ,0,@Rect1, 0) then
Rect1 := Rect(0,0,Screen.Width,Scre en.Height - 32);
if EventMsgArray[0].hwnd <> 65432 then
begin
{the 65432 is a number just to verify that this is a valid .pbj file}
SetLength(EventMsgArray, 0);
ShowMessage('the file "'+FileName+'" is NOT an Event File compatible with this version. No Playback is availible');
end else
{check to see if the Desktop work area matches}
if (EventMsgArray[0].message <> Rect1.Left) or
(EventMsgArray[0].paramL <> Rect1.Top) or
(EventMsgArray[0].paramH <> Rect1.Right) or
(EventMsgArray[0].time <> Rect1.Bottom) then
begin
SetLength(EventMsgArray, 0);
ShowMessage('the DeskTop Dimentions are NOT compatible with this Playback File. No Playback is availible');
end else
begin
Memo1.Clear;
for i := 1 to NumMsgs-1 do
begin
{this adds the messages to a memo, just to check in a practice version}
case EventMsgArray[i].message of
WM_LBUTTONDOWN: Memo1.Lines.Add('L Down '+IntToStr(EventMsgArray[i ].paramL)+ ' '+IntToStr(EventMsgArray[i ].paramH)+ ' hwnd '+IntToStr(EventMsgArray[i ].hwnd));
WM_LBUTTONUP: Memo1.Lines.Add('L UP '+IntToStr(LOWORD(EventMsg Array[i].p aramL))+' '+IntToStr(HIWORD(EventMsg Array[i].p aramL))+' hwnd '+IntToStr(EventMsgArray[i ].hwnd));
WM_MOUSEMOVE: Memo1.Lines.Add('Move '+IntToStr(EventMsgArray[i ].paramL)+ ' '+IntToStr(EventMsgArray[i ].paramH)+ ' hwnd '+IntToStr(EventMsgArray[i ].hwnd));
WM_RBUTTONDOWN: Memo1.Lines.Add('R Down '+IntToStr(EventMsgArray[i ].paramL)+ ' '+IntToStr(EventMsgArray[i ].paramH)+ ' hwnd '+IntToStr(EventMsgArray[i ].hwnd));
WM_RBUTTONUP: Memo1.Lines.Add('R UP '+IntToStr(EventMsgArray[i ].paramL)+ ' '+IntToStr(EventMsgArray[i ].paramH)+ ' hwnd '+IntToStr(EventMsgArray[i ].hwnd));
WM_KEYDOWN: Memo1.Lines.Add('Key Down '+IntToStr(EventMsgArray[i ].paramL){ Chr(LOBYTE (LOWORD(Ev entMsgArra y[i].param L)))}+' '+IntToStr(EventMsgArray[i ].paramH)+ ' hwnd '+IntToStr(EventMsgArray[i ].hwnd));
WM_KEYUP: Memo1.Lines.Add('Key UP '+IntToStr(EventMsgArray[i ].paramL)+ ' '+IntToStr(EventMsgArray[i ].paramH)+ ' hwnd '+IntToStr(EventMsgArray[i ].hwnd));
else Memo1.Lines.Add('Other '+IntToStr(EventMsgArray[i ].message) +' '+IntToStr(EventMsgArray[i ].paramH)+ ' hwnd '+IntToStr(EventMsgArray[i ].hwnd));
end;
end;
end;
end;
end;
end;
procedure TForm1.Timer1Timer(Sender: TObject);
begin
If Timer1.Tag = 0 then
begin
DrawDesk(TimerStr, True);
Timer1.Tag := 1;
Timer1.Interval := 300;
end else
begin
DrawDesk(TimerStr, False);
Timer1.Tag := 0;
Timer1.Interval := 800;
end;
end;
procedure TForm1.FormActivate(Sender : TObject);
begin
{you may not need this, it's kind of insurance to end the timer}
Timer1.Enabled := False;
UnhookWindowsHookEx(JHook) ;
end;
- - - - - - - - - - - - - - - - - - - - - - - - -
let me know if this helps, ask questions if it is unclear.
private
{ Private declarations }
EventMsgArray: Array of TEVENTMSG;
TempBmp: TBitmap;
TimerStr: String;
procedure DrawDesk(DisText: String; Red: Boolean);
var
Form1: TForm1;
Track, SysModal, DoDelay, GotMove: Boolean;
FirstGo: Byte;
StartTime: Cardinal;
TempEvMsg: TEventMsg;
SRect: TRect;
NumMsgs, PlayNum: Integer;
JHook: THandle;
procedure TForm1.FormCreate(Sender: TObject);
begin
NumMsgs := 0;
JHook := 0;
PlayNum := 0;
Track := False;
SysModal := False;
SetLength(EventMsgArray,1)
end;
procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
SetLength(EventMsgArray,0)
UnhookWindowsHookEx( JHook );
end;
procedure TForm1.ApplicationEvents1M
var Handled: Boolean);
begin
{this is the Application OnMessage event.
You need to check for the WM_CANCELJOURNAL message
which will happen if the user presses Ctrl+Esc, Ctrl+Alt+Del and maybe Ctrl+Break}
Handled := False;
if Msg.message = WM_CANCELJOURNAL then
begin
Timer1.Enabled := False;
InvalidateRect(0,@SRect, True);
SetForegroundWindow(Handle
Perform(WM_SYSCOMMAND,SC_R
ShowMessage('Journaling has been canceled');
end;
end;
procedure TForm1.DrawDesk(DisText: String; Red: Boolean);
var
DeskDC, hBrush: Integer;
begin
{I had to remind the user that Journaling was happing,
so I draw a Rect in the lower right corner of the desktop}
if not SystemParametersInfo(SPI_G
SRect := Rect(0,0,Screen.Width,Scre
SRect.TopLeft := Point(SRect.Right-158,SRec
DeskDC := GetDC(0);
hBrush := 0;
if Red then
begin
hBrush := CreateSolidBrush($000000FF
SelectObject(DeskDC,hBrush
SetBkColor(DeskDC,$000000F
end;
Rectangle(DeskDC,SRect.Lef
InflateRect(SRect,-3,-2);
DrawText(DeskDC,PChar(DisT
DeleteObject(hBrush);
ReleaseDC(GetDesktopWindow
TimerStr := DisText;
Timer1.Tag := 0;
Timer1.Interval := 700;
Timer1.Enabled := True;
end;
function Hook2Proc(Code:integer; wParam: Longint; var EventStrut: TEVENTMSG): Longint; stdcall;
begin
{this is the JournalRecordProc}
Result := CallNextHookEx( JHook, Code, wParam, Longint(@EventStrut) );
if Code < 0 then Exit;
{you should cancel operation if you get HC_SYSMODALON}
if Code = HC_SYSMODALON then SysModal := True
else if Code = HC_SYSMODALOFF then SysModal := False;
if Code = HC_ACTION then
begin
if SysModal then Exit;
if EventStrut.message = WM_KEYDOWN then
begin
if (EventStrut.paramL = 17923) {17923 is for Ctrl+Break}
or (Chr(LOBYTE(LOWORD(EventSt
Form1.but_EndMTClick(Form1
end else if (Chr(LOBYTE(LOWORD(EventSt
begin
{Ctrl+S will start the journal record}
if Track = False then
begin
StartTime := GetTickCount;
{It is nessarry to subtract the TickCount to get the amount of ticks between events
I do not use the Event Time in my playback Proc, but you might want to}
FirstGo := 0;
{First go is used to remove the Ctrl and S key up events}
Form1.DrawDesk('JOURNAL NOW RECORDING'#10'Press Ctrl+q to Stop', False);
end;
Track := True;
end;
If Track then
begin
if NumMsgs < 1024 then
{I have limited the event log to 1024 for NO reason
except for those who forget or don't know how to stop
the the journaling}
begin
if EventStrut.message = WM_MOUSEMOVE then
begin
{I found the 1000's of mouse move messages to be
totally useless, so I skip all the Mouse Move messages
except the Last one before another type of event}
TempEvMsg := EventStrut;
GotMove := True;
end else
begin
if GotMove then
begin
GotMove := False;
Form1.EventMsgArray[NumMsg
Dec(Form1.EventMsgArray[Nu
Inc(NumMsgs);
SetLength(Form1.EventMsgAr
end;
if FirstGo < 2 then
if (EventStrut.message = WM_KEYUP) then
begin
{this prevents the Ctrl and s key up from being recorded}
if EventStrut.paramL = 7441 then Inc(FirstGo);
{7441 is Ctrl key}
if Chr(LOBYTE(LOWORD(EventStr
Exit
end else FirstGo := 2;
Form1.EventMsgArray[NumMsg
Dec(Form1.EventMsgArray[Nu
Inc(NumMsgs);
SetLength(Form1.EventMsgAr
end;
end;
end;
end;
end;
procedure TForm1.but_StartMTClick(Se
var
Rect1: TRect;
begin
{this button click starts the Journal Record hook}
if Track then
begin
Messagebox(0,'Mouse tracking has already been started', 'No can Restart', MB_OK or MB_ICONQUESTION);
Exit;
end;
GotMove := False;
FirstGo := 0;
JHook := SetWindowsHookEx(WH_JOURNA
if JHook > 0 then
begin
NumMsgs := 1;
{set NumMsgs to 1 because the first EventMsgArray is used for
file verification and NOT for events}
Track := False;
SysModal := False;
SetLength(EventMsgArray,2)
{If the user has changed screen Resolution OR moved the task bar
then the Position of mouse clicks will NOT be correct, So get the
Work Area and record it, so you can compare it later for playback}
if not SystemParametersInfo(SPI_G
Rect1 := Rect(0,0,Screen.Width,Scre
EventMsgArray[0].message := Rect1.Left;
EventMsgArray[0].paramL := Rect1.Top;
EventMsgArray[0].paramH := Rect1.Right;
EventMsgArray[0].time := Rect1.Bottom;
EventMsgArray[0].hwnd := 65432;
Perform(WM_SYSCOMMAND,SC_M
{I minimaze the main Form so the user can click other things}
DrawDesk('JOURNAL RECORD READY'#10'Press Ctrl+s to Start', False);
end else
ShowMessage('Journal Hook could not be set');
end;
procedure TForm1.but_EndMTClick(Send
var
i: Integer;
begin
{This is an Emergency Stop Journaling button click}
Track := False;
if JHook < 1 then
NumMsgs := 0 else
UnhookWindowsHookEx(JHook)
Timer1.Enabled := False;
SetForegroundWindow(Handle
Perform(WM_SYSCOMMAND,SC_R
Application.ProcessMessage
InvalidateRect(0,@SRect, True);
Sleep(200);
JHook := 0;
if NumMsgs >1 then
begin
Memo1.Clear;
{start the for loop with 1 because the 0 if for Work Area verification}
for i := 1 to NumMsgs-1 do
begin
case EventMsgArray[i].message of
WM_LBUTTONDOWN: Memo1.Lines.Add('L Down '+IntToStr(EventMsgArray[i
WM_LBUTTONUP: Memo1.Lines.Add('L UP '+IntToStr(LOWORD(EventMsg
WM_MOUSEMOVE: Memo1.Lines.Add('Move '+IntToStr(EventMsgArray[i
WM_RBUTTONDOWN: Memo1.Lines.Add('R Down '+IntToStr(EventMsgArray[i
WM_RBUTTONUP: Memo1.Lines.Add('R UP '+IntToStr(EventMsgArray[i
WM_KEYDOWN: Memo1.Lines.Add('Key Down '+IntToStr(EventMsgArray[i
WM_KEYUP: Memo1.Lines.Add('Key UP '+IntToStr(EventMsgArray[i
else Memo1.Lines.Add('Other '+IntToStr(EventMsgArray[i
end;
end;
while EventMsgArray[NumMsgs-1].p
begin
{This removes the Ctrl key mouse down repeat messages}
Dec(NumMsgs);
if NumMsgs < 3 then Break;
end;
end else
ShowMessage('No Journal Messages are recorded');
end;
function PlaybackProc(Code:integer;
begin
{this journal playback function is very difficult to understand.
Each event in the EventMsgArray is called here 2 or 3 times or more,
first with a HC_GETNEXT code to get a delay Result, if there is a Delay
Result larger than 0,then the event is NOT Fired, and a HC_GETNEXT is
called again after the delay period. If the Delay Result is 0 then the event
is fired and the HC_SKIP code is called, which advances the PlayNum to the
next EventMsgArray and then it does the HC_GETNEXT to start the loop again.}
Result := 0;
if Code < 0 then
begin
{if code is less than 0 pass it}
Result := CallNextHookEx( JHook, Code, wParam, Integer(@EventStrut) );
Exit;
end;
if Code = HC_SKIP then
begin
if SysModal then Exit;
Inc(PlayNum);
DoDelay := True;
{set this to true to get a Delay in the HC_GETNEXT}
if PlayNum >= NumMsgs-1 then
begin
{this ends the playback}
UnhookWindowsHookEx(JHook)
Form1.Timer1.Enabled := False;
Sleep(700);
InvalidateRect(0,@SRect, True);
SetForegroundWindow(Form1.
Form1.Perform(WM_SYSCOMMAN
end;
Exit;
end;
if Code = HC_GETNEXT then
begin
if SysModal then Exit;
Form1.Label3.Caption := 'HC_GETNEXT';
Move(Form1.EventMsgArray[P
if DoDelay then
begin
Result := 380;
{I tried lots of different combinations of setting the
delay Result, but for playback using a constant between 200 and 1000
seemed best}
//Result := Form1.EventMsgArray[PlayNu
{Setting the Result to time of EventStrut will simulate the
event timing, more or less}
DoDelay := False;
end; {else
EventStrut.time := 300{EventStrut.time+ StartTime};
{I tried setting this time to different values, but it seems to
have little or No effect}
{unlike many other windows system Proc, this uses the memory value
in the Proc parameter EventStrut (lParam), when this function returns.
Notice that it is declared as a var. You do NOT need to to use
CallNextHookEx, because this is not used like other Hooks, to get messages,
this fires mouse and keyboard events outside of a "hook Chain"}
Exit;
end else
if Code = HC_SYSMODALON then SysModal := True
else if Code = HC_SYSMODALOFF then
begin
SysModal := False;
end;
CallNextHookEx( JHook, Code, wParam, Integer(@EventStrut));
{I'm not sure you need this CallNextHookEx here}
end;
procedure TForm1.but_PlayBackClick(S
var
i: Integer;
begin
ShowMessage('NumMsgs '+IntToStr(NumMsgs));
if NumMsgs > 0 then
begin
PlayNum := 1;
DoDelay := False;
ReleaseCapture;
SysModal := False;
Form1.Perform(WM_SYSCOMMAN
DrawDesk('JOURNAL PLAYBACK'#10'Please Wait', False);
StartTime := GetTickCount;
JHook := SetWindowsHookEx(WH_JOURNA
end;
end;
procedure TForm1.sbut_SaveTFileClick
var
SaveFile: File of TEventMsg;
i: Integer;
FileName: String;
begin
if NumMsgs > 1 then
begin
FileName := 'C:\Stuff\Play Journal1.pbj';
AssignFile(SaveFile, FileName);
Rewrite(SaveFile);
for i := 0 to NumMsgs-1 do
Write(SaveFile,EventMsgArr
CloseFile(SaveFile);
end;
end;
procedure TForm1.sbut_LoadTFileClick
var
FileName: String;
LoadFile: File of TEventMsg;
i: Integer;
Rect1: TRect;
begin
FileName := 'C:\Stuff\Play Journal1.pbj';
if FileExists(FileName) then
begin
AssignFile(LoadFile, FileName);
Reset(LoadFile);
NumMsgs := FileSize(LoadFile);
if NumMsgs > 1 then
begin
SetLength(EventMsgArray, NumMsgs);
for i := 0 to NumMsgs-1 do
Read(LoadFile,EventMsgArra
CloseFile(LoadFile);
{this is to check the file to see if it is a valid .ppj file for this
version AND to see if the DeskTop work Area matches the file's work area}
if not SystemParametersInfo(SPI_G
Rect1 := Rect(0,0,Screen.Width,Scre
if EventMsgArray[0].hwnd <> 65432 then
begin
{the 65432 is a number just to verify that this is a valid .pbj file}
SetLength(EventMsgArray, 0);
ShowMessage('the file "'+FileName+'" is NOT an Event File compatible with this version. No Playback is availible');
end else
{check to see if the Desktop work area matches}
if (EventMsgArray[0].message <> Rect1.Left) or
(EventMsgArray[0].paramL <> Rect1.Top) or
(EventMsgArray[0].paramH <> Rect1.Right) or
(EventMsgArray[0].time <> Rect1.Bottom) then
begin
SetLength(EventMsgArray, 0);
ShowMessage('the DeskTop Dimentions are NOT compatible with this Playback File. No Playback is availible');
end else
begin
Memo1.Clear;
for i := 1 to NumMsgs-1 do
begin
{this adds the messages to a memo, just to check in a practice version}
case EventMsgArray[i].message of
WM_LBUTTONDOWN: Memo1.Lines.Add('L Down '+IntToStr(EventMsgArray[i
WM_LBUTTONUP: Memo1.Lines.Add('L UP '+IntToStr(LOWORD(EventMsg
WM_MOUSEMOVE: Memo1.Lines.Add('Move '+IntToStr(EventMsgArray[i
WM_RBUTTONDOWN: Memo1.Lines.Add('R Down '+IntToStr(EventMsgArray[i
WM_RBUTTONUP: Memo1.Lines.Add('R UP '+IntToStr(EventMsgArray[i
WM_KEYDOWN: Memo1.Lines.Add('Key Down '+IntToStr(EventMsgArray[i
WM_KEYUP: Memo1.Lines.Add('Key UP '+IntToStr(EventMsgArray[i
else Memo1.Lines.Add('Other '+IntToStr(EventMsgArray[i
end;
end;
end;
end;
end;
end;
procedure TForm1.Timer1Timer(Sender:
begin
If Timer1.Tag = 0 then
begin
DrawDesk(TimerStr, True);
Timer1.Tag := 1;
Timer1.Interval := 300;
end else
begin
DrawDesk(TimerStr, False);
Timer1.Tag := 0;
Timer1.Interval := 800;
end;
end;
procedure TForm1.FormActivate(Sender
begin
{you may not need this, it's kind of insurance to end the timer}
Timer1.Enabled := False;
UnhookWindowsHookEx(JHook)
end;
- - - - - - - - - - - - - - - - - - - - - - - - -
let me know if this helps, ask questions if it is unclear.
ASKER
Excellent, just what I needed!
Thanks a lot, much appreciated.
There's an extra 200 for the effort in the question list, and 100 for mr Stuart as his bit of code was quite helpful.
Mr B
Thanks a lot, much appreciated.
There's an extra 200 for the effort in the question list, and 100 for mr Stuart as his bit of code was quite helpful.
Mr B
Stuart Johnson,
The points for Q for you is found at:
https://www.experts-exchange.com/questions/20291778/Points-for-Stuart-Johnson.html
modulo
Community Support Moderator
Experts Exchange
The points for Q for you is found at:
https://www.experts-exchange.com/questions/20291778/Points-for-Stuart-Johnson.html
modulo
Community Support Moderator
Experts Exchange
ASKER
>freely outside my own application"
Well, what I meant was.. To give my macro application (or macapp) the ability to click outside it's own program, as well as be able to type into other programs.
The WH_JOURNAL looks very promising, I'll look into that properly when I've had some sleep.
Also, the other thing, how could I get a screen shot in delphi (or even better, a screenshot of the selected app only)?
Mr B