Solved

Minimize all or Show Desktop

Posted on 2001-09-03
4
302 Views
Last Modified: 2010-04-06
Is it possible to use a windows api call to minimize all windows or to show the windows desktop? I'm using Delphi 5 on Win 98. Thanx!
0
Comment
Question by:skynergy
  • 2
4 Comments
 
LVL 2

Accepted Solution

by:
DidierD earned 50 total points
ID: 6450272
Hi,

Try this.

PROCEDURE  MinimizeAll;
BEGIN
    {    +  'M'  MINIMIZES  ALL  WINDOWS,  +'M'
        RESTORES  THEM  }
    KEYBD_EVENT(  VK_LWIN,  MAPVIRTUALKEY(  VK_LWIN,  0),  0,  0  );  
    KEYBD_EVENT(  ORD('M'),  MAPVIRTUALKEY(  ORD('M'),  0),  0,  0  );
    KEYBD_EVENT(  ORD('M'),  MAPVIRTUALKEY(  ORD('M'),  0),  KEYEVENTF_KEYUP,  0  );
    KEYBD_EVENT(  VK_LWIN,  MAPVIRTUALKEY(  VK_LWIN,  0),  KEYEVENTF_KEYUP,  0  );
END;

Didier
0
 
LVL 2

Expert Comment

by:DidierD
ID: 6450282
to do the opposite

procedure  UnMinimizeAll;
begin
    KEYBD_EVENT(  VK_LWIN,  MAPVIRTUALKEY(  VK_LWIN,  0),  0,  0  );
    KEYBD_EVENT(  VK_SHIFT,  MAPVIRTUALKEY(  VK_SHIFT,  0),  0,  0  );
    KEYBD_EVENT(  ORD('M'),  MAPVIRTUALKEY(  ORD('M'),  0),  0,  0  );
    KEYBD_EVENT(  ORD('M'),  MAPVIRTUALKEY(  ORD('M'),  0),  KEYEVENTF_KEYUP,  0  );
    KEYBD_EVENT(  VK_SHIFT,  MAPVIRTUALKEY(  VK_SHIFT,  0),  KEYEVENTF_KEYUP,  0  );
    KEYBD_EVENT(  VK_LWIN,  MAPVIRTUALKEY(  VK_LWIN,  0),  KEYEVENTF_KEYUP,  0  );
end;
0
 
LVL 5

Expert Comment

by:alanwhincup
ID: 6450488
You could do it like this aswell:

First Example:
{This example minimizes or restores the windows depending on if 'Show Desktop.scf' has been ran or not. Remember to add 'ShellAPI' to the uses clause of the unit}
procedure Minimize;
var
  Dir : array [0..MAX_PATH] of Char;
begin
  GetSystemDirectory(Dir, MAX_PATH);
  ShellExecute(Handle, 'Open', PChar(Dir + '\Show Desktop.scf'), nil, nil, SW_SHOWNORMAL);
end;

Second Example:
{This example just minimizes the windows}
procedure Minimize;
var
  H : hWnd;
begin
  H := Handle;
  while H > 0 do
  begin
    if IsWindowVisible(H) then
      PostMessage(H, WM_SYSCOMMAND, SC_MINIMIZE, 0);
    H := GetNextWindow(H,GW_HWNDNEXT);
  end;
end;

Cheers,

Alan
0
 

Author Comment

by:skynergy
ID: 6450501
Thanx for all the help guys!
0

Featured Post

Are your AD admin tools letting you down?

Managing Active Directory can get complicated.  Often, the native tools for managing AD are just not up to the task.  The largest Active Directory installations in the world have relied on one tool to manage their day-to-day administration tasks: Hyena. Start your trial today.

Question has a verified solution.

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

Suggested Solutions

Hello everybody This Article will show you how to validate number with TEdit control, What's the TEdit control? TEdit is a standard Windows edit control on a form, it allows to user to write, read and copy/paste single line of text. Usua…
Introduction Raise your hands if you were as upset with FireMonkey as I was when I discovered that there was no TListview.  I use TListView in almost all of my applications I've written, and I was not going to compromise by resorting to TStringGrid…
Microsoft Active Directory, the widely used IT infrastructure, is known for its high risk of credential theft. The best way to test your Active Directory’s vulnerabilities to pass-the-ticket, pass-the-hash, privilege escalation, and malware attacks …
This video shows how to use Hyena, from SystemTools Software, to bulk import 100 user accounts from an external text file. View in 1080p for best video quality.

810 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