[Last Call] Learn about multicloud storage options and how to improve your company's cloud strategy. Register Now

x
?
Solved

showing a dialog by using FindWindowEX

Posted on 2006-06-11
3
Medium Priority
?
892 Views
Last Modified: 2012-05-07
First of all... srry about the points. This is all I have :(

2 apps

the first app have:

Form Title: "my 1st app"
dialog name: "my dialog 1" (dialogEx)

the second app have a button "call the dialog from app 1"

now...

In app 2 I want to find the app1 handle and its dialog handle and then open the dialog from the app2.

is that possible ?

wnd := FindWindow(nil, 'my 1st app');
wnd := FindWindowEx(wnd, 0, '????????',nil); < -- I really don't know how it works
...


ty in advance

0
Comment
Question by:furmiga
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 4

Expert Comment

by:LMuadDIb
ID: 16882915
procedure TForm1.Button1Click(Sender: TObject);
var
  h,openDialog:hwnd;
begin
  h := FindWindow(nil,'my 1st app');
  if h <> 0 then begin// if we found notepad
    openDialog := FindWindowEx(h, 0, 'TButton', nil);
    sendmessage(openDialog,WM_LButtonDown,0,0);
    sendmessage(openDialog,WM_LButtonUp,0,0);
  end else
    ShowMessage('not found.');
end;

If you had a button on your first app that would open a dialog than you can simulate the buttonclick, shown above.
I dont know if its possible to open a dialog window without using a menuitem/button/action or similiar control.

Syntax:}

  FindWindowEx(Parent: HWND;  {a handle to a parent window}
               Child: HWND;  {a handle to a child window}
               ClassName: PChar;  {a pointer to a null-terminated class name string}
               WindowName: PChar  {a pointer to a null-terminated window name string}
               ): HWND;  {returns a handle to a window}
0
 
LVL 4

Accepted Solution

by:
LMuadDIb earned 200 total points
ID: 16882969
here is some code to find like the second tbutton and click that button:

function FindControlByNumber(hApp: HWND; ControlClassName: string; ControlNr: Word = 1): HWND;

....

procedure TForm1.Button1Click(Sender: TObject);
var
  h,openDialog:hwnd;
begin
  h := FindWindow(nil,'my 1st app');
  if h <> 0 then begin// if we found notepad
    openDialog := FindControlByNumber(h, 'tbutton', 2);
    sendmessage(openDialog,WM_LButtonDown,0,0);
    sendmessage(openDialog,WM_LButtonUp,0,0);
  end else
    ShowMessage('not found.');
end;

function FindControlByNumber(hApp: HWND; ControlClassName: string; ControlNr: Word = 1): HWND;
var
  i: Word;
  hControl: HWND;
begin
  Result := 0;
  if IsWindow(hApp) then
  begin
    Dec(ControlNr);
    hControl := 0;
    for i := 0 to ControlNr do
    begin
      hControl := FindWindowEx(hApp, hControl, PChar(ControlClassName), nil);
      if hControl = 0 then
        Exit;
    end;
  end;
  Result := hControl;
end;
0
 
LVL 7

Author Comment

by:furmiga
ID: 16882978
Thats why i gave the name of the dialog "my dialog 1" wich is a EX dialog

I really don't know if I have to use the FindWindowEX since the Dialog is hidden and there is nothing phisical to open it ( I mean, if i start the program with a param -menu then the MainMenu is visible wich allow me to open the "my dialog 1" ).


Now, if I start the program without the param, is there any chance to open the main menu or just call the dialog ?.


They exist so I was wondering if i can force them to show
0

Featured Post

Concerto's Cloud Advisory Services

Want to avoid the missteps to gaining all the benefits of the cloud? Learn more about the different assessment options from our Cloud Advisory team.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Objective: - This article will help user in how to convert their numeric value become words. How to use 1. You can copy this code in your Unit as function 2. than you can perform your function by type this code The Code   (CODE) The Im…
Introduction I have seen many questions in this Delphi topic area where queries in threads are needed or suggested. I know bumped into a similar need. This article will address some of the concepts when dealing with a multithreaded delphi database…
Sometimes it takes a new vantage point, apart from our everyday security practices, to truly see our Active Directory (AD) vulnerabilities. We get used to implementing the same techniques and checking the same areas for a breach. This pattern can re…
Is your data getting by on basic protection measures? In today’s climate of debilitating malware and ransomware—like WannaCry—that may not be enough. You need to establish more than basics, like a recovery plan that protects both data and endpoints.…
Suggested Courses

650 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question