@msdn=http://search.microsoft.com/search/results.aspx?qu=$$$ @pinvoke=http://pinvoke.net/$$$.htm Summary: The ClipCursor API !!!!C# Signature: [System.Runtime.InteropServices.DllImport("user32.dll")] static extern bool ClipCursor(ref RECT lpRect); !!!!VB.Net Signature: Private Declare Function ClipCursor Lib "user32"(ByRef lpRect As RECT) As Long !!!!User-Defined Types: public struct RECT { #region Variables. /// <summary> /// Left position of the rectangle. /// </summary> public int Left; /// <summary> /// Top position of the rectangle. /// </summary> public int Top; /// <summary> /// Right position of the rectangle. /// </summary> public int Right; /// <summary> /// Bottom position of the rectangle. /// </summary> public int Bottom; #endregion #region Operators. /// <summary> /// Operator to convert a RECT to Drawing.Rectangle. /// </summary> /// <param name="rect">Rectangle to convert.</param> /// <returns>A Drawing.Rectangle</returns> public static implicit operator Rectangle(RECT rect) { return Rectangle.FromLTRB(rect.Left, rect.Top, rect.Right, rect.Bottom); } /// <summary> /// Operator to convert Drawing.Rectangle to a RECT. /// </summary> /// <param name="rect">Rectangle to convert.</param> /// <returns>RECT rectangle.</returns> public static implicit operator RECT(Rectangle rect) { return new RECT(rect.Left, rect.Top, rect.Right, rect.Bottom); } #endregion #region Constructor. /// <summary> /// Constructor. /// </summary> /// <param name="left">Horizontal position.</param> /// <param name="top">Vertical position.</param> /// <param name="right">Right most side.</param> /// <param name="bottom">Bottom most side.</param> public RECT(int left, int top, int right, int bottom) { Left = left; Top = top; Right = right; Bottom = bottom; } #endregion } !!!!Notes: http://windowssdk.msdn.microsoft.com/library/default.asp?url=/library/en-us/winui/winui/windowsuserinterface/resources/cursors/cursorreference/cursorfunctions/clipcursor.asp !!!!Tips & Tricks: Please add some! !!!!Sample Code: Please add some! RECT rect =new RECT( 10, 10, 20, 20 ); ClipCursor(ref rect); !!!!Alternative Managed API: System.Windows.Forms.Cursor.Clip Documentation: ClipCursor@msdn on MSDN
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