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Delphi sends a WINDWOS Message control button (one of the buttons in the control Calculator)

Source: Internet
Author: User
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[Delphi]View Plaincopyprint?
  2. Procedure TfrmmainBtnsendclick (sender:tobject);
  4. Var
  6. Hcalc, h1:cardinal;
  8. Begin
  10. WinExec (' calc ', SW_SHOWNORMAL); Run Calculator
  12. Hcalc: = FindWindow (' Scicalc ', nil);
  14. //Find the main window handle of calculator, see the class name through Spy + +
  18. H1: = FindWindowEx (Hcalc, 0, ' Button ', ' 9 ');
  20. //Find the handle to button 1 and see the various controls and their parent-child, sibling relationships through Spy + +
  24. SendMessage (Hcalc, Wm_command, Makewparam (GetDlgCtrlID (H1), bn_clicked), H1)
  26. End

http://blog.csdn.net/yanjiaye520/article/details/7942499

Delphi sends a WINDWOS Message control button (one of the buttons in the control Calculator)

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