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Move a Window Without A Titlebar

Adrian031197
Adrian031197 asked
on
Medium Priority
541 Views
Last Modified: 2013-11-20
MSVC 1
How do I move a window without a title bar?
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Commented:
By default implementation of Windows API's moving a window without the title bar  is not possible. But there is a way of doing this. Firstly, you need to override the WM_NCPAINT or OnNCPaint() windows message. When the user clicks and drags determine the POINT location of the window and if the point position lies on the valid client area of the window ( and not on the border ) perform a MoveWindow().

This is a more professional approach and needs some bit of brain storming and smart coding. You might be able to find some information in the MSDN. If u are new to Visual C++/Windows programming I would suggest spending some time reading some Win32 SDK documentation and if you are in a real hurry , then rely on some freeware OCX /VBX tool available on the net.

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Author

Commented:
Well, I had that basic idea, but how do I convert where the mouse click is to a screen coord? I know how how to do the rest of it.

And I'm having another difficulty with this topic as well. Even though I turn off the title bar in the App Studio, I still get one!

Commented:
To convert mouse clicks to screen co-ordinates you have reliable API's like ClientToScreen(), GetCursorPos() etc.

If u want to remove the title bar of the application window. You can either disable it in the PreCreateWindow() method. Or also , run SetWindowLong() to disable the title bar. Surprisingly, App Wiz is not that exhaustive to disable the Window styles properly.



Commented:
To convert mouse clicks to screen co-ordinates you have reliable API's like ClientToScreen(), GetCursorPos() etc.

If u want to remove the title bar of the application window. You can either disable it in the PreCreateWindow() method. Or also , run SetWindowLong() to disable the title bar. Surprisingly, App Wiz is not that exhaustive to disable the Window styles properly.



Author

Commented:
I'm using a dialog as my main window. In the InitInstance() function I deleted the command to create a new window and inserted my dialog command.
In the App Studio, I unchecked title bar. When I test the dialog, there is no bar, but when I run the program, there is a bar, and everything is pushed down, some of it off the window. Very annoying.

Commented:
First, you can move a window with no caption. You just have to write a handler for the WM_NCHITTEST message and reply HTCAPTION

For your dialog problem, how do you use a dialog as your main window ? Are you using a CFormView ? If you are just calling DoModal() in your InitInstance(), your dialog should be displayed  with no caption. Otherwise, the dialog is wrapped by a frame.
A frame with a caption...



Author

Commented:
I use a CDialog as my main view.

Commented:
You should create a new project and choose a dialog based one.
Unselect the "titlebar" style for the dialog and write a handler for WM_NCHITTEST :

UINT CDlgnotitleDlg::OnNcHitTest(CPoint point)
{
   return(HTCAPTION);
}

I have done it myself and it is working fine.
If you want it, send me a mail at nasarre@col.bsf.alcatel.fr and I'll send it to you

Author

Commented:
There isn't such a thing as a dialog based program in MSVC 1. I have to do it myself, but when I compare what I've done to what the App Wizard does in future versions, it's the same.

Commented:
So, implement your dialog class

Unselect the "

Commented:
So, implement your dialog class

Unselect the "

Commented:
Sorry but my comment seems to be always truncated :-(


So, implement your dialog class

Unselect t

Commented:
Sorry but my comment seems to be always truncated :-((((

So, implement your dialog class, unselect the titlebar style for the

Commented:
Arrrggg !!!!!!!

Impossible to answer :-(

(1) no titlebar style for the dialog
(2) handler for WM_NCHITTEST and return HTCAPTION
(3) change your InitInstance() : DoModal() and return FALSE


Author

Commented:
I HAVE done 1 & 3. And I guess 2 is for moving it without a bar.

Commented:
Right.
You have to add a handler for WM_NCHITTEST

BEGIN_MESSAGE_MAP(CDlgnotitleDlg, CDialog)
//{{AFX_MSG_MAP(CDlgnotitleDlg)
   ON_WM_NCHITTEST()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

with this implementation

UINT CDlgnotitleDlg::OnNcHitTest(CPoint point)
{
//      return CDialog::OnNcHitTest(point);
   return(HTCAPTION);
}

Author

Commented:
Ok, but why do I still have a title bar?

Commented:
Take a look at your RC file and check that the dialog definition is done without WS_CAPTION style. Here is my own :

IDD_DLGNOTITLE_DIALOG DIALOGEX 0, 0, 185, 92
STYLE DS_MODALFRAME | WS_POPUP | WS_VISIBLE
EXSTYLE WS_EX_APPWINDOW
FONT 8, "MS Sans Serif"
BEGIN
    DEFPUSHBUTTON   "OK",IDOK,128,7,50,14
    PUSHBUTTON      "Cancel",IDCANCEL,128,23,50,14
    LTEXT           "TODO: Place dialog controls here.",IDC_STATIC,5,34,113,
                    8
END

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