C# Signature:

[DllImport("user32.dll")]
static extern bool ReleaseCapture();

VB.NET Signature:

<DllImport("user32.dll")> _
Private Shared Function ReleaseCapture() As Boolean
End Function

User-Defined Types:

None.

Notes:

None.

ReleaseCapture will delegate mousedown events to underlying controls.

Tips & Tricks:

Please add some!

Sample Code:

You can use the ReleaseCapture() function to provide drag functionality. for example the following code will allow the user to drag a control around a form (you'll have to assign this code to the mousedown event):

[DllImport("User32.dll")]
private static extern int SendMessage(IntPtr hWnd, int msg , int wParam , ref int lParam);
[DllImport("user32")]
public static extern int ReleaseCapture(IntPtr hwnd);

private const int WM_SYSCOMMAND = 0x112;
private const int MOUSE_MOVE = 0xF012;

private void control_MouseDown(object sender, MouseEventArgs e)
{
   Control ctrl = sender as Control;
   ReleaseCapture(ctrl.Handle);
   int nul =0;
   SendMessage(ctrl.Handle, WM_SYSCOMMAND, MOUSE_MOVE, ref nul);
  }

Alternative Managed API:

Capture property on System.Windows.Forms.Control

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