void CThumbnailListCtrl::OnNMRclick(NMHDR *pNMHDR, LRESULT *pResult)
{
// TODO: 在此添加控件通知处理程序代码
LPNMITEMACTIVATE lpnmitem = (LPNMITEMACTIVATE)(pNMHDR);
...
}
// 因为
typedef struct tagNMITEMACTIVATE
{
NMHDR hdr; ！！！--传入头
int iItem;
int iSubItem;
UINT uNewState;
UINT uOldState;
UINT uChanged;
POINT ptAction;
LPARAM lParam;
UINT uKeyFlags;
} NMITEMACTIVATE, *LPNMITEMACTIVATE;