Delphi

Question:
I want to minimize all windows from my application.
Can you give the source code?

Answer:
No problem.
What you need to do is override close command for every instance.
Here we have 2 procedure, please try.
You may make any changes needed.


procedure TForm1.Button1Click(Sender: TObject);
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;

Dont forget to try this also.

procedure TForm1.Button1Click(Sender: TObject);
begin
Keybd_event(VK_LWIN, 0, 0, 0);
Keybd_event(Byte('M'), 0, 0, 0);
Keybd_event(Byte('M'), 0, KEYEVENTF_KEYUP, 0);
Keybd_event(VK_LWIN, 0, KEYEVENTF_KEYUP, 0);
end;