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