Re: Move a dialog based application without the title bar

From:

"Ajay Kalra" <ajaykalra@yahoo.com>

Newsgroups:

microsoft.public.vc.mfc

Date:

Mon, 19 Mar 2007 17:58:52 -0500

Message-ID:

<#yMuiGnaHHA.4788@TK2MSFTNGP04.phx.gbl>

I am not sure why you need ONLButtonDown. All you need is OnNcHitTest; check
for mouse location and simply return HTCAPTION based on the location.

OnNcHitTest is called before each mouse move. OS gives you the opportunity
to let it know if the mouse is at any of the interesting points (HTCAPTION
etc). If it is, it will translate a mouse click/drag go moving the window.
Its a very useful functionality.

--
Ajay Kalra [MVP - VC++]
ajaykalra@yahoo.com

"Shahoo" <shahookamangar@gmail.com> wrote in message
news:1174319501.932907.325250@y66g2000hsf.googlegroups.com...

On Mar 19, 9:47 am, "Ajay Kalra" <ajayka...@yahoo.com> wrote:

Override OnNcHitTest and return HTCAPTION if the mouse is where you want

the

move start from.

--
Ajay Kalra [MVP - VC++]
ajayka...@yahoo.com

"Shahoo" <shahookaman...@gmail.com> wrote in message

news:1174257581.360400.30620@e65g2000hsc.googlegroups.com...

Hi,
I have created a dialog based application without a title bar, and
want to move the dialog using the left mouse button.
I tried MoveWindow nut the window was streching instead of moving !!!
Can anyone help me please?

-------------------------------------

Hi and thanks for your help.
I did it with the following two handlers:

void CYourDialog::OnLButtonDown(UINT nFlags, CPoint point)
  {
     CDialog::OnLButtonDown(nFlags, point);
     PostMessage( WM_NCLBUTTONDOWN, HTCAPTION,
          MAKELPARAM( point.x, point.y));
  }

  // Handler for WM_NCHITTEST message

  LONG CYourDialog::OnNcHitTest( UINT uParam, LONG lParam )
  {
     int xPos = LOWORD(lParam);
     int yPos = HIWORD(lParam);
     UINT nHitTest = CDialog::OnNcHitTest(CSize(xPos, yPos));
     return (nHitTest == HTCLIENT) ? HTCAPTION : nHitTest;
  }

can anyone tell me more about waht is happening in them ( I am a
newbie).