Dragging a dialog by clicking anywhere on it

This is how you create a dialog that can be dragged by clicking anywhere on it, ie. not just the caption bar.
void CNCHitDlg::OnLButtonDown(UINT nFlags, CPoint point) 
{
	CDialog::OnLButtonDown(nFlags, point); 
	// fake windows into thinking your clicking on the caption, does not
	// maximize on double click
	PostMessage( WM_NCLBUTTONDOWN, HTCAPTION, MAKELPARAM( point.x, point.y));
} 
or
UINT CNCHitDlg::OnNcHitTest(CPoint point) 
{
	UINT nHitTest = CDialog::OnNcHitTest( point );
	// also fake windows out, but this maximizes the window when you double
	// click on it. 
	return (nHitTest == HTCLIENT) ? HTCAPTION : nHitTest;
}



Comments

  • it works excellent except clicked on menu area!

    Posted by showhigh on 01/06/2006 07:13am

    how to solve it?

    Reply
  • Elegant Simplicity!

    Posted by jgazin on 05/21/2004 06:41pm

    I was about to do this the brute force way using "LButtonDown", "LButtonUp" and "MouseMove" with a whole bunch of code. 
    I'm glad I checked CodeGuru first!
    Thanks!!!

    Reply
  • How to drag a dialog playing movie on it.?

    Posted by Legacy on 08/21/2003 12:00am

    Originally posted by: Nick

    Hi there.,

    How to drag a dialog playing movie on it (on a picture control) by grabbing anywhere .?


    Thanks .!

    Best Regards,
    Nick.

    Reply
  • Win32 only ? (no class, no MFC) Click here...

    Posted by Legacy on 06/11/2003 12:00am

    Originally posted by: maya75

    First thank for your tip.
    
    

    To do it with Win32 only, in your dialog CALLBACK function :

    case WM_LBUTTONDOWN:
    {
    int xPos = LOWORD(lParam); // horizontal position of cursor
    int yPos = HIWORD(lParam); // vertical position of cursor
    // Drag window by clicking anywhere on it
    PostMessage(dialog_handle, WM_NCLBUTTONDOWN, HTCAPTION, MAKELPARAM( xPos, yPos));
    break;
    }

    Reply
  • great

    Posted by Legacy on 04/03/2003 12:00am

    Originally posted by: beinerror

    thank you very much for this!!

    Reply
  • How can I do that with CFrameWnd

    Posted by Legacy on 02/02/2002 12:00am

    Originally posted by: Gandalf

    How can I do the same thing but catching the view in application with CFrameWnd as main window. When I try to use both methods you've mentioned I can only move the view inside the frame, not the frame.

    Reply
  • DOESNT WORK AT ALL!!!

    Posted by Legacy on 12/13/2001 12:00am

    Originally posted by: Boogly POO

    I tried both methods and no luck for me. I even tried again by starting a brand new mfc dialog app with nothing in the dialog box, and it still didnt work.

    HELP!!!

    Reply
  • But it cannot work in WinCE!

    Posted by Legacy on 12/10/2001 12:00am

    Originally posted by: jiajia

    But it cannot work in WinCE.

    MFC for Windows CE does not support the following method of the CWnd class:

    OnNcHitTest

    Reply
  • Moving dialog with button

    Posted by Legacy on 12/07/2001 12:00am

    Originally posted by: Neal

    Hi,
    
    

    I have a dialog with a button placed on it, how would I move the dialog by holding the mouse down over the button and dragging.

    I have tride lots of different things but have had no success.

    Any help would so cool.

    Reply
  • Another solution for ATL

    Posted by Legacy on 11/01/2001 12:00am

    Originally posted by: Nikolay Yankov

    I use previous solution (of Jens Rahm) to drag dynamically added ActiveX controls in client area of ATL Composite Control.
    
    The code is:

    LRESULT CStoreRow::OnMouseMove(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
    {
    if(m_iLButtonDown)
    {
    ::ReleaseCapture();
    HWND hWndParent = GetParent();
    ::SendMessage(hWndParent, WM_NCLBUTTONDOWN, HTCAPTION, 0);

    }

    return 0;
    }


    Thank you Jens Rahm

    Reply
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