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Articles / Desktop Programming / Windows Forms
Posted 31 May 2010


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Dragging a Borderless Form

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4.94/5 (9 votes)
12 Jun 2010CPOL
A code snippet which makes a borderless form draggable.
I was looking through some old C# projects on my external hard drive, when I stumbled upon the following code snippet, which makes a borderless form draggable.

protected override void WndProc(ref Message m)
    if (m.Msg == 163 && this.ClientRectangle.Contains(this.PointToClient(new Point(m.LParam.ToInt32()))) && m.WParam.ToInt32() == 2)
        m.WParam = (IntPtr)1;
    base.WndProc(ref m);
    if (m.Msg == 132 && m.Result.ToInt32() == 1)
        m.Result = (IntPtr)2;

This makes the form draggable by clicking and dragging anywhere on the form itself (that is, not on controls unless they are disabled).


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


About the Author

Kristian Sixhøj
Denmark Denmark

New biography coming sometime.
Green Alien | [Alien]

Comments and Discussions

QuestionContainers? Pin
HiMik200331-May-10 23:08
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AnswerRe: Containers? Pin
Kristian Sixhøj31-May-10 23:12
MemberKristian Sixhøj31-May-10 23:12 
GeneralRe: Containers? Pin
HiMik200331-May-10 23:32
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GeneralRe: Containers? Pin
Kristian Sixhøj31-May-10 23:37
MemberKristian Sixhøj31-May-10 23:37 
GeneralRe: Containers? Pin
HiMik200331-May-10 23:44
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GeneralRe: Containers? Pin
Kristian Sixhøj31-May-10 23:59
MemberKristian Sixhøj31-May-10 23:59 
GeneralRe: Containers? Pin
HiMik20031-Jun-10 0:39
MemberHiMik20031-Jun-10 0:39 
AnswerRe: Containers? Pin
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GeneralRe: Containers? Pin
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