The WM_CAP_FILE_SET_INFOCHUNK message sets and clears information chunks. Information chunks can be inserted in an AVI file during capture to embed text strings or custom data. You can send this message explicitly or by using the capFileSetInfoChunk macro.

wParam = (WPARAM)0; 
lParam = (LPARAM) (LPCAPINFOCHUNK) (lpInfoChunk); 



Pointer to a CAPINFOCHUNK structure defining the information chunk to be created or deleted.

Return Value

Returns TRUE if successful or FALSE otherwise.

If an error occurs and an error callback function is set using the WM_CAP_SET_CALLBACK_ERROR message, the error callback function is called.


Multiple registered information chunks can be added to an AVI file. After an information chunk is set, it continues to be added to subsequent capture files until either the entry is cleared or all information chunk entries are cleared. To clear a single entry, specify the information chunk in the fccInfoID member and NULL in the lpData member of the CAPINFOCHUNK structure. To clear all entries, specify NULL in fccInfoID.


Requirement Value
Minimum supported client
Windows 2000 Professional [desktop apps only]
Minimum supported server
Windows 2000 Server [desktop apps only]

See also

Video Capture

Video Capture Messages