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Mouse Coordinates?

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How do you guys find the mouse cursor position in your opengl windows?
    HWND    Hwnd;
    POINT   Cursor;
    RECT    Rect;
    int     x,y;
    int     mx,my;    
    char    mouse[10];
    Hwnd = GetForegroundWindow();

    mx = (int)Cursor.x - (int)Rect.left;
    my = (int)Cursor.y - (int)Rect.top;


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I''m not sure if this is a problem only I had, but I think getClientRect doesn''t return a left and top property. Only a right and bottom one, that represent the height and width. I used getWindowRect to retrieve the left and top coordinates, and getclientrect to get the width and height of my client window.

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