下面是從f1求得WM_CAP_DLG_VIDEOFORMAT的資訊,我想要獲得Video Format的 bit depth,主要是我不會用bcb的message功能,請問要如何送這個message, 求得bit depth --------------------------------------------------------------------- The WM_CAP_DLG_VIDEOFORMAT message displays a dialog box in which the user can select the video format. The Video Format dialog box might be used to select image dimensions, bit depth, and hardware compression options. You can send this message explicitly or by using the capDlgVideoFormat macro. WM_CAP_DLG_VIDEOFORMAT wParam = (WPARAM) 0; lParam = 0L; Return Values Returns TRUE if successful or FALSE otherwise. Remarks After this message returns, applications might need to update the CAPSTATUS structure because the user might have changed the image dimensions. ---------------------------------------------------------------------