DVM_DIALOG

Notifies a video capture driver to display a dialog box for setting the video parameters of a channel.

Returns DV_ERR_OK if successful or an error code otherwise. The following errors are defined:

DV_ERR_INVALHANDLE	Indicates the device handle is invalid.
DV_ERR_NOTSUPPORTED	Indicates the message is not supported.

dwParam1: Handle to the parent window.
dwFlags: Flags for the dialog box.
The VIDEO_DLG_QUERY flag indicates that the driver immediately returns DV_ERR_OK if it supplies a dialog box for the channel or DV_ERR_NOTSUPPORTED otherwise.

Typically, this dialog box lets the user configure a video channel. For example, a VIDEO_IN channel might supply a dialog box to let the user select image dimensions and bit depth. Each channel type (VIDEO_IN, VIDEO_OUT, VIDEO_EXTERNALIN, and VIDEO_EXTERNALOUT) can have a unique configuration dialog box.