need help with DL_BEGINDRAG, DL_DRAGGING, DL_CANCELDRAG, or DL_DROPPED.

[Anddos]

i have no code yet and have been reading msdn but i cant understand how it works properly , is there any tuts with working samples for this ,

[Queatrix]

Why? MSDN tells you EVERYTHING that you need to know:

DL_CANCELDRAG
DL_BEGINDRAG
DL_DRAGGING
DL_DROPPED

There's also Google.

EDIT:

Okay, So here is somthing on DL_BEGINDRAG:

DL_BEGINDRAG:
{
   DRAGLISTINFO dli = *((LPDRAGLISTINFO)lParam); 
   dli.uNotification;                 // The notification.
   dli.hWnd;                          // Handle to the window.
   dli.ptCursor;                      // Current coords of the cursor.
   int idCtl = (int)wParam;           // The controls ID.
}
break;

[Anddos]

yes but i dont know where it goes , does it go in the message loop , as a case label?

[Queatrix]

I would assume it goes in the callback like so:

BOOL CALLBACK DialogCallback(HWND hwnd, UINT Message, WPARAM wParam, LPARAM lParam)
{
    switch(Message)
    {
        DL_BEGINDRAG:
        {
           DRAGLISTINFO dli = *((LPDRAGLISTINFO)lParam); 
           dli.uNotification;                 // The notification.
           dli.hWnd;                          // Handle to the window.
           dli.ptCursor;                      // Current coords of the cursor.
           int idCtl = (int)wParam;           // The controls ID.
        }
        break;
        default:
            return FALSE;
    }
    return TRUE;
}

I haven't tested it, so I could very well be wrong.

[robinpaul84]

If you want to capture a single frame as a still image, you can use the WM_CAP_GRAB_FRAME_NOSTOP or WM_CAP_GRAB_FRAME message (or the capGrabFrameNoStop or capGrabFrame macro) to capture the digitized image in an internal frame buffer. You can freeze the display on the captured image by using WM_CAP_GRAB_FRAME. Otherwise, use WM_CAP_GRAB_FRAME_NOSTOP.

Once captured, you can copy the image for use by other applications. You can copy an image from the frame buffer to the clipboard by using the WM_CAP_EDIT_COPY message (or the capEditCopy macro). You can also copy the image from the frame buffer to a device-independent bitmap (DIB) by using the WM_CAP_FILE_SAVEDIB message (or the capFileSaveDIB macro).
Your application can also use the two single-frame capture messages to edit a sequence frame by frame, or to create a time-lapse photography sequence.

CODE:
capGrabFrame(hwndVideo);//this pauses the video feed in teh current camera hwndVideo
capFileSaveDIB(hwndVideo,"image.jpeg");