Aero Snap effect for form with FormBorderStyle = None

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I have winform with FormBorderStyle = None and I need add deployment form if he touch sides screen (it is easy) , but how add aero demo as form will be deploy, i can not.
Searched in functions Dwmapi.dll, but did not find.
Screenshot.

Posted 31-Mar-13 4:17am

cyber_ua

Updated 19-Oct-18 11:19am

v2

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2 solutions

Solution 1

Add the following to your Form:

C#

protected override CreateParams CreateParams
{
   get
   {
      CreateParams cp = base.CreateParams;
      cp.Style |= 0x40000; //WS_SIZEBOX;
      return cp;
   }
}

though I usually use:

C#

protected override CreateParams CreateParams
{
   get
   {
      CreateParams cp = base.CreateParams;
      {
         cp.Style |= 0x20000 | 0x80000 | 0x40000; //WS_MINIMIZEBOX | WS_SYSMENU | WS_SIZEBOX;
      }
      return cp;
   }
}

Posted 31-Mar-13 6:26am

toATwork

Comments

cyber_ua 1-Apr-13 1:57am

Does not work if i drag form and touch to sides.

Jack Han 31-Jul-13 15:21pm

Well the borders are ok, but how do I get a control, a panel for a example, to behave as if it were a title bar? And this includes aerosnap? Aslo no aero borders but a custom form that can be resized and have aerosnap properites?

toATwork 1-Apr-13 12:09pm

Dou you have a caption bar? Did you overwrite the HitTest function?

cyber_ua 1-Apr-13 12:56pm

What is the HitTest function?

toATwork 2-Apr-13 2:49am

It is used to determine where the mouse cursor is in the given Form, e.g. border, caption...
Check this out:
http://msdn.microsoft.com/en-us/library/windows/desktop/ms645618%28v=vs.85%29.aspx

cyber_ua 2-Apr-13 7:12am

Does it need that determine cursor location?
What does if cursor touch sides (with form)?

cyber_ua 2-Apr-13 10:32am

If cp.Style = 0x00040000L;// WS_SIZEBOX; the window has a sizing border. Why does when i drag border to top demo show , but if i drag to left or right does not show demo?

toATwork 2-Apr-13 10:34am

This I have never seen before.

cyber_ua 2-Apr-13 10:38am

(int)0x00040000L == 0x40000
http://msdn.microsoft.com/en-us/library/ms632600.aspx

toATwork 2-Apr-13 10:45am

I was referring to the aero dock preview working on the top but not left or right

cyber_ua 2-Apr-13 10:44am

Added borders really help , but did not completely.
How is add demo to left and right borders?
Please help.

toATwork 2-Apr-13 10:49am

Is left+right enabled? Can you do it by keyboard:
http://superuser.com/questions/285356/possible-to-snap-top-bottom-instead-of-just-left-right-in-windows-7

cyber_ua 2-Apr-13 10:57am

Yes, because other programs is can, show demo with touch to left and right sides or i don't understand question !?

toATwork 2-Apr-13 11:05am

Try to do it by keybord as described in the given link, e.g. left half snap (Windows + left)

cyber_ua 2-Apr-13 11:10am

If i use keyboard, it worked.

cyber_ua 2-Apr-13 11:20am

It is strangely, but and on my notebook work same.

toATwork 2-Apr-13 12:03pm

I am sorry but I do not have any further suggestions

cyber_ua 2-Apr-13 12:10pm

Thanks for help, and sorry if i wrote illiterate (I study English ).
P.s I have idea will see source code .net (class Form).

toATwork 2-Apr-13 14:19pm

You are welcome. I hope you figure it out.

cyber_ua 5-Apr-13 7:04am

I was wrong it did not should show demo when drag border to left or right.
But how is show demo when i drag form to sides , as when form dragged for title bar, if at does not exist title bar, instead of him my title bar?

Member 12795607 19-Oct-18 17:23pm

Is there any way to be displaying the dock demos on screen sides without using

cp.Style |= 0x40000;

I have my own caption and borders and I really don't wanna see windows default resize boxes / borders.

Now, I know that the docking "demo" is drawn in non-client area, but I wonder if I could only import this windows feature without using windows resize box.

Thanks in advance.

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cyber_ua · Accepted Answer · 2013-04-06T04:26:00

I found solution, need handle WM_NCHITTEST if cursor on title bar return HTCAPTION. Test code if all form title bar.

C#

protected override void WndProc(ref Message message)
        {
            base.WndProc(ref message);

            if (message.Msg == WM_NCHITTEST )
                            message.Result = (IntPtr)HTCAPTION;
        }