typedef struct TQ3ViewerDropFiles {
NMHDR nmhdr;
HANDLE hDrop;
} TQ3ViewerDropFiles;
typedef struct TQ3ViewerSetView {
NMHDR nmhdr;
TQ3ViewerCameraView view;
} TQ3ViewerSetView;
typedef struct TQ3ViewerSetViewNumber {
NMHDR nmhdr;
unsigned long number;
} TQ3ViewerSetViewNumber;
typedef struct TQ3ViewerButtonSet {
NMHDR nmhdr;
unsigned long button;
} TQ3ViewerButtonSet;