EnumVideoCallback

  • Article

This function is an application-defined callback procedure for the IDDVideoPortContainer::EnumVideoPorts method.

HRESULT WINAPI EnumVideoCallback(
  LPDDVIDEOPORTCAPS lpDDVideoPortCaps, 
  LPVOID lpContext
);

Parameters

  • lpDDVideoPortCaps
    [in] Pointer to the DDVIDEOPORTCAPS structure that contains the video port information, including the ID and capabilities. This data is read-only.
  • lpContext
    [in] Pointer to a caller-defined structure that is passed to the member every time it is called.

Return Values

The callback function returns DDENUMRET_OK to continue the enumeration.

The callback function returns DDENUMRET_CANCEL to stop it.

Remarks

Video-port related functions cannot be called from inside the EnumVideoCallback function. Attempts to do so will fail, returning DDERR_CURRENTLYNOTAVAIL.

You can use the LPDDENUMVIDEOCALLBACK data type to declare a variable that contains a pointer to this callback function.

Requirements

OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.
Header: Ddraw.h.
Link Library: User-defined.

 Last updated on Thursday, April 08, 2004

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