Form without border

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  • Start date Start date
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Guest

I want to move and resize a window without border. I solved the problem of
moving thanks to internet search by using

ReleaseCapture();
SendMessage(Handle, WM_NCLBUTTONDOWN, HT_CAPTION, 0);

In the Mouse_Down event handler.

Is there a similar way to size the window? Just replacing HT_CAPTION with
HT_BORDER_LEFT or one of the other HT_BORDER_... commands doesn’t seem to
work.

Chris
 
cnickl said:
I want to move and resize a window without border. I solved the problem of
moving thanks to internet search by using

ReleaseCapture();
SendMessage(Handle, WM_NCLBUTTONDOWN, HT_CAPTION, 0);

In the Mouse_Down event handler.

Is there a similar way to size the window? Just replacing HT_CAPTION with
HT_BORDER_LEFT or one of the other HT_BORDER_... commands doesn’t seem to
work.
Click to expand...

<URL:http://dotnetrix.co.uk/misc.html>
-> "An example of a moveable/resizable shaped form."
 
Hi,

Do you want to let the user resize and move borderless form with the mouse
or you want to do it from code?

I'm asking because if you want to allow the user do it there is a better way
to accomplish this.
 
cnickl said:
I want to move and resize a window without border. I solved the problem of
moving thanks to internet search by using

ReleaseCapture();
SendMessage(Handle, WM_NCLBUTTONDOWN, HT_CAPTION, 0);

In the Mouse_Down event handler.

Is there a similar way to size the window? Just replacing HT_CAPTION with
HT_BORDER_LEFT or one of the other HT_BORDER_... commands doesn’t seem to
work.

Chris
Click to expand...

Could you give the exact code you used to make the window movable without a
window border?

Ive been trying for weeks to make my form movable without a window border
and i cant fin the code anywhere!

Thanks,
 
If you send the form a windows message

WM_SYSCOMMAND, 0xF012, 0

then you can move it at runtime. Only ever done it in Delphi though...

Perform(WM_SYSCOMMAND, $F012, 0);


Not even looked at how to send a windows message to a WinForm control.



--
Pete
=========================================
I use Enterprise Core Objects (Domain driven design)
http://www.capableobjects.com/
=========================================
 
JezzzMoore said:
Could you give the exact code you used to make the window movable without
a
window border?

Ive been trying for weeks to make my form movable without a window border
and i cant fin the code anywhere!
Click to expand...

Override WndProc in your Form and handle the WM_NCHITTEST notification.
Return HTCAPTION for any coordinate that should allow moving the window.
Something like this:

private const int HTCAPTION = 2;
private const int WM_NCHITTEST = 0x84;

protected override void WndProc(ref Message m)
{
if (m.Msg == WM_NCHITTEST)
{
Point pt = new Point(m.LParam.ToInt32());
pt = this.PointToClient;
if (DoesThisCoordinateAllowTheWindowToBeMoved(pt))
m.Result = new IntPtr(HTCAPTION);
else
base.WndProc(m);
}
else
{
base.WndProc(m);
}

}
 
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