The AT_ISIS_AREAPAINTINFO structure is pointed to by lData in the callback function when lCommand is set to IG_ISIS_AREA_PAINT is declared as follows:

Declaration:

typedef struct tagAT_ISIS_AREAPAINTINFO
{
        int size;  
        HDC hDC;
        RECT destRect;
        RECT clipRect;
} AT_ISIS_AREAPAINTINFO, FAR* LPAT_ISIS_AREAPAINTINFO;

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