capCaptureSequenceNoFile macro (vfw.h)

The capCaptureSequenceNoFile macro initiates streaming video capture without writing data to a file. You can use this macro or explicitly send the WM_CAP_SEQUENCE_NOFILE message.

Syntax

void capCaptureSequenceNoFile(
   hwnd
);

Parameters

hwnd

Handle to a capture window.

Return value

None

Remarks

This message is useful in conjunction with video stream or waveform-audio stream callback functions that let your application use the video and audio data directly.

If you want to alter the parameters controlling streaming capture, use the capCaptureSetSetup macro prior to starting the capture.

By default, the capture window does not allow other applications to continue running during capture. To override this, either set the fYield member of the CAPTUREPARMS structure to TRUE, or install a yield callback function.

During streaming capture, the capture window can optionally issue notifications to your application of specific types of conditions. To install callback procedures for these notifications, use the following macros:

• capSetCallbackOnError
• capSetCallbackOnStatus
• capSetCallbackOnVideoStream
• capSetCallbackOnWaveStream
• capSetCallbackOnYield

Requirements

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

See also

Video Capture

Video Capture Macros