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delphidelphi-2009vcl

Hide the Main Form in a Delphi 2009 Application

The following code works fine in Delphi 7. However, in Delphi 2009 the form does remain hidden but the button on the taskbar is now appearing.

ShowWindow(Handle, SW_HIDE);
SetWindowLong(Handle, GWL_EXSTYLE, GetWindowLong(Handle, GWL_EXSTYLE) or WS_EX_TOOLWINDOW );
ShowWindow(Handle, SW_SHOW);

The above code is called in the FormCreate method.

Solution

  • Turns out the reason we were seeing the Application window on the taskbar was a simple setting similar to stukelly's answer but not quite.

    To get the main form to appear on the task bar and hide the application menu you apply:

    Application.MainFormOnTaskbar := True;
Application.ShowMainForm := False;

    No code behind the form create or anything required.