how to make a panel draggable in c#

You can create movable panels when you create c# winForm.

I told you how to do it in detail. Look carefully and follow along.

If you have any questions, please feel free to email us.
a@tion.kr

 

1. Copy the source code below to the top of your code.

[DllImport("user32.DLL", EntryPoint = "ReleaseCapture")]
private extern static void ReleaseCapture();
[DllImport("user32.DLL", EntryPoint = "SendMessage")]
private extern static void SendMessage(System.IntPtr hWnd, int wMsg, int wParam, int lParam);

private const int SYSTEMCOMMAND = 0x112;
private const int SC_DRAGMOVE = 0xF012;

// This function moves the MainForm.
private void panel_MouseMove(object sender, MouseEventArgs e)
{
ReleaseCapture();
SendMessage(this.Handle, SYSTEMCOMMAND, SC_DRAGMOVE, 0);
}

// This function only moves the panel.
private void panel_MouseMove_object(object sender, MouseEventArgs e)
{
ReleaseCapture();

Panel panel = sender as Panel;
SendMessage(panel.Handle, SYSTEMCOMMAND, SC_DRAGMOVE, 0);
}

 

2. Add ‘MouseMove events’ to the panel you want to move.

Select a mousemove event from a mouse event entry in the visual studio.

 this.panel.MouseMove += new System.Windows.Forms.MouseEventHandler(this.panel_MouseMove_object);

 

 

3. Move the panel.

If it works well, it’s a success.

 

thank you 🙂