MCI_DEVTYPE_ANIMATIONThis MCI command message is used to obtain static information about a device. All devices must respond to this message. The parameters and flags available for this message depend on the selected device. Information is returned in the dwReturn field of the data structure identified by lpCapsParms.
DWORD dwFlags
The following standard and command-specific flags apply to all devices:
MCI_NOTIFY
Specifies that MCI should post the MM_MCINOTIFY message when this command completes. The window to receive this message is specified in the dwCallback field of the data structure identified by lpCapsParms.
MCI_WAIT
Specifies that the query operation should finish before MCI returns control to the application.
MCI_GETDEVCAPS_ITEM
Specifies that the dwItem field of the data structure identified by lpCapsParms contains a constant specifying which device capability to obtain. The following constants define which capability to return in the dwReturn field of the data structure:
MCI_GETDEVCAPS_CAN_EJECT
The dwReturn field is set to TRUE if the device can eject the media; otherwise, it is set to FALSE.
MCI_GETDEVCAPS_CAN_PLAY
The dwReturn field is set to TRUE if the device can play the media; otherwise, it is set to FALSE.
If a device specifies TRUE, it implies the device supports MCI_PAUSE and MCI_STOP as well as MCI_PLAY.
MCI_GETDEVCAPS_CAN_RECORD
The dwReturn field is set to TRUE if the device supports recording; otherwise, it is set to FALSE.
If a device specifies TRUE, it implies the device supports MCI_PAUSE and MCI_STOP as well as MCI_RECORD.
MCI_GETDEVCAPS_CAN_SAVE
The dwReturn field is set to TRUE if the device can save a file; otherwise, it is set to FALSE.
MCI_GETDEVCAPS_COMPOUND_DEVICE
The dwReturn field is set to TRUE if the device uses device elements; otherwise, it is set to FALSE.
MCI_GETDEVCAPS_DEVICE_TYPE
The dwReturn field is set to one of the following values indicating the device type:
MCI_DEVTYPE_ANIMATION
MCI_DEVTYPE_CD_AUDIO
MCI_DEVTYPE_DAT
MCI_DEVTYPE_DIGITAL_VIDEO
MCI_DEVTYPE_OTHER
MCI_DEVTYPE_OVERLAY
MCI_DEVTYPE_SCANNER
MCI_DEVTYPE_SEQUENCER
MCI_DEVTYPE_VIDEODISC
MCI_DEVTYPE_VIDEOTAPE
MCI_DEVTYPE_WAVEFORM_AUDIO
MCI_GETDEVCAPS_HAS_AUDIO
The dwReturn field is set to TRUE if the device has audio output; otherwise, it is set to FALSE.
MCI_GETDEVCAPS_HAS_VIDEO
The dwReturn field is set to TRUE if the device has video output; otherwise, it is set to FALSE.
For example, the field is set to TRUE for devices that support the animation or videodisc command set.
MCI_GETDEVCAPS_USES_FILES
The dwReturn field is set to TRUE if the device requires a filename as its element name; otherwise, it is set to FALSE.
Only compound devices use files.
LPMCI_GETDEVCAPS_PARMS lpCapsParms
Specifies a far pointer to the MCI_GETDEVCAPS_PARMS data structure. (Devices with extended command sets might replace this data structure with a device-specific data structure.)
DWORD dwFlags
The following extensions apply to animation devices:
MCI_GETDEVCAPS_ITEM
Specifies that the dwItem field of the data structure identified by lpCapsParms contains a constant specifying which device capability to obtain. The following additional device-capability constants are defined for animation devices and specify which value to return in the dwReturn field of the data structure:
MCI_ANIM_GETDEVCAPS_CAN_REVERSE
The dwReturn field is set to TRUE if the device can play in reverse; otherwise, it is set to FALSE.
MCI_ANIM_GETDEVCAPS_CAN_STRETCH
The dwReturn field is set to TRUE if the device can stretch the image to fill the frame; otherwise, it is set to FALSE.
MCIMMP returns FALSE.
MCI_ANIM_GETDEVCAPS_FAST_RATE
The dwReturn field is set to the standard fast play rate in frames per second.
MCIMMP returns MCIERR_UNSUPPORTED_FUNCTION.
MCI_ANIM_GETDEVCAPS_MAX_WINDOWS
The dwReturn field is set to the maximum number of windows that the device can handle simultaneously.
MCI_ANIM_GETDEVCAPS_NORMAL_RATE
The dwReturn field is set to the normal rate of play in frames per second.
MCIMMP returns MCIERR_UNSUPPORTED_FUNCTION.
MCI_ANIM_GETDEVCAPS_PALETTES
The dwReturn field is set to TRUE if the device can return a palette handle; otherwise, it is set to FALSE.
MCIMMP returns TRUE.
MCI_ANIM_GETDEVCAPS_SLOW_RATE
The dwReturn field is set to the standard slow play rate in frames per second.
MCIMMP returns MCIERR_UNSUPPORTED_FUNCTION.
LPMCI_GETDEVCAPS_PARMS lpCapsParms
Specifies a far pointer to the MCI_GETDEVCAPS_PARMS data structure.
DWORD dwFlags
The following extensions apply to videodisc devices:
MCI_GETDEVCAPS_ITEM
Specifies that the dwItem field of the data structure identified by lpCapsParms contains a constant specifying which device capability to obtain. The following additional device-capability constants are defined for videodisc devices and specify which value to return in the dwReturn field of the data structure:
MCI_VD_GETDEVCAPS_CAN_REVERSE
The dwReturn field is set to TRUE if the videodisc player can play in reverse; otherwise, it is set to FALSE.
Some players can play CLV discs in reverse as well as CAV discs.
MCI_VD_GETDEVCAPS_FAST_RATE
The dwReturn field is set to the standard fast play rate in frames per second.
MCI_VD_GETDEVCAPS_NORMAL_RATE
The dwReturn field is set to the normal play rate in frames per second.
MCI_VD_GETDEVCAPS_SLOW_RATE
The dwReturn field is set to the standard slow play rate in frames per second.
MCI_VD_GETDEVCAPS_CLV
Indicates the information requested applies to CLV format discs. By default, the capabilities apply to the current disc.
MCI_VD_GETDEVCAPS_CAV
Indicates the information requested applies to CAV format discs. By default, the capabilities apply to the current disc.
LPMCI_GETDEVCAPS_PARMS lpCapsParms
Specifies a far pointer to the MCI_GETDEVCAPS_PARMS data structure.
DWORD dwFlags
The following extensions apply to video overlay devices:
MCI_GETDEVCAPS_ITEM
Specifies that the dwItem field of the data structure identified by lpCapsParms contains a constant specifying which device capability to obtain. The following additional device-capability constants are defined for video overlay devices and specify which value to return in the dwReturn field of the data structure:
MCI_OVLY_GETDEVCAPS_CAN_FREEZE
The dwReturn field is set to TRUE if the device can freeze the image; otherwise, it is set to FALSE.
MCI_OVLY_GETDEVCAPS_CAN_STRETCH
The dwReturn field is set to TRUE if the device can stretch the image to fill the frame; otherwise, it is set to FALSE.
MCI_OVLY_GETDEVCAPS_MAX_WINDOWS
The dwReturn field is set to the maximum number of windows that the device can handle simultaneously.
LPMCI_GETDEVCAPS_PARMS lpCapsParms
Specifies a far pointer to the MCI_GETDEVCAPS_PARMS data structure.
DWORD dwFlags
The following extended flag applies to waveform audio devices:
MCI_GETDEVCAPS_ITEM
Specifies that the dwItem field of the data structure identified by lpCapsParms contains a constant specifying which device capability to obtain. The following additional device-capability constants are defined for waveform audio devices and specify which value to return in the dwReturn field of the data structure:
MCI_WAVE_GETDEVCAPS_INPUT
The dwReturn field is set to the total number of waveform input (recording) devices.
MCI_WAVE_GETDEVCAPS_OUTPUT
The dwReturn field is set to the total number of waveform output (playback) devices.
LPMCI_GETDEVCAPS_PARMS lpCapsParms
Specifies a far pointer to the MCI_GETDEVCAPS_PARMS data structure.
Returns zero if successful. Otherwise, it returns an MCI error code.