typedef struct {
DWORD dwCallback;
HWND hWnd;
UINT wReserved1;
UINT nCmdShow;
UINT wReserved2;
LPCSTR lpstrText;
} MCI_ANIM_WINDOW_PARMS;
The MCI_ANIM_WINDOW_PARMS structure contains parameters for the MCI_WINDOW message for animation devices. When assigning data to the members in this structure, set the corresponding MCI flags in the lParam1 parameter of mciSendCommand to validate the members.
MCI_WINDOW