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OnMouseDown event for a button

Sat, 03 Aug 2002 13:41:23 -0700

i have a dialog with a button placed on it. when the programm is running i want to trigger the WM_LBUTTONDOWN-Message on the button, that's why i've implemented the following function:
void CTestDlg::OnLButtonDown(UINT nFlags, CPoint point)
{
CRect Rect;
Button1.GetWindowRect(Rect);//Breakpt
ClientToScreen(&point);
if (Rect.PtInRect(point))
Button1.SetWindowText("Release me!");

CDialog::OnLButtonDown(nFlags, point);
}
The curios thing about that function is that it is being called when i perform the mouse-down event ontop of the window. but when i perform the mouse-down event ontop of the button, then it is not called, because there is no break at the breakpoint.
does anyone know how to fix that???

Re: OnMouseDown event for a button

Fri, 16 Aug 2002 11:45:06 -0700

Hi.

This is just a suggestion as I didn't try it out, but it might help:
The WM_LBUTTONDOWN is sent to the button, not to your dialog, that's why your dialog doesn't recieve it. Add a message handler for the button too and you have solved the problem.
If you still want your main window to get the WM_LBUTTONDOWN message even if it's on the button, you can send this message from the button's message handler to it's parent window.
Hope this helps.

: i have a dialog with a button placed on it. when the programm is running i want to trigger the WM_LBUTTONDOWN-Message on the button, that's why i've implemented the following function:
: void CTestDlg::OnLButtonDown(UINT nFlags, CPoint point)
: {
: CRect Rect;
: Button1.GetWindowRect(Rect);//Breakpt
: ClientToScreen(&point);
: if (Rect.PtInRect(point))
: Button1.SetWindowText("Release me!");
:
: CDialog::OnLButtonDown(nFlags, point);
: }
: The curios thing about that function is that it is being called when i perform the mouse-down event ontop of the window. but when i perform the mouse-down event ontop of the button, then it is not called, because there is no break at the breakpoint.
: does anyone know how to fix that???
:

Re: OnMouseDown event for a button

Mon, 17 Oct 2011 23:07:01 -0700

A button sends a BN_CLICKED message to its owner when it is clicked. Use that.