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WM_CAP_SET_USER_DATA message

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The WM_CAP_SET_USER_DATA message associates a LONG_PTR data value with a capture window. You can send this message explicitly or by using the capSetUserData macro.

WM_CAP_SET_USER_DATA 
wParam = (WPARAM) 0; 
lParam = (LPARAM)lUser;

Parameters

lUser

Data value to associate with a capture window.

Return Value

Returns TRUE if successful or FALSE if streaming capture is in progress.

Remarks

Typically this message is used to point to a block of data associated with a capture window.

Requirements

Requirement Value
Minimum supported client
 Windows 2000 Professional [desktop apps only]
Minimum supported server
 Windows 2000 Server [desktop apps only]
Header
Vfw.h

See also

Video Capture

Video Capture Messages