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Capture Mouse and Limit Mouse Position

VC++ (MFC) Tips : Mouse and Cursor

Capture Mouse

Key Functions: SetCapture(); // Causes all subsequent mouse input to be sent to the current CWnd object regardless of the position of the cursor

SetCapture();
… //other codes
ReleaseCapture(); //release mouse cursor

Limit Mouse Position

Key Functions: ClipCursor(&rect);

RECT rect;
GetClientRect(&rect);    // Copies the client coordinates of the CWnd client area into the structure pointed to by lpRect.
ClientToScreen(&rect);    // Converts the client coordinates of a given point or rectangle on the display to screen coordinates.
ClipCursor(&rect);    // The cursor is a shared resource. If this parameter is NULL, the cursor is free to move anywhere on the screen.
… //other codes
ClipCursor(NULL);    //release mouse cursor