IDirectDraw4::WaitForVerticalBlank

Important:
This is retired content. This content is outdated and is no longer being maintained. It is provided as a courtesy for individuals who are still using these technologies. This content may contain URLs that were valid when originally published, but now link to sites or pages that no longer exist.

The IDirectDraw4::WaitForVerticalBlankmethod helps the application synchronize itself with the vertical-blank interval.

HRESULT WaitForVerticalBlank(
DWORD
dwFlags
,
HANDLE
hEvent
);

Parameters

dwFlags

Determines how long to wait for the vertical blank.

DDWAITVB_BLOCKBEGIN	Returns when the vertical-blank interval begins.
DDWAITVB_BLOCKBEGINEVENT	Triggers an event when the vertical blank begins. This value is not currently supported.
DDWAITVB_BLOCKEND	Returns when the vertical-blank interval ends and the display begins.

hEvent

Handle of the event to be triggered when the vertical blank begins. This parameter is not currently used.

Return Values

If the method succeeds, the return value is DD_OK.

If the method fails, the return value may be one of the following error values:

Requirements

Runs on	Versions	Declared in	Link to
Windows CE OS	2.12 or later. Version 2.12 requires DXPAK 1.0 or later.	ddraw.h	ddraw.lib