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acmFormatChoose function

The acmFormatChoose function creates an ACM-defined dialog box that enables the user to select a waveform-audio format.

Syntax


MMRESULT acmFormatChoose(
  LPACMFORMATCHOOSE pfmtc
);

Parameters

pfmtc

Pointer to an ACMFORMATCHOOSE structure that contains information used to initialize the dialog box. When this function returns, this structure contains information about the user's format selection.

The pwfx member of this structure must contain a valid pointer to a memory location that will contain the returned format header structure. Moreover, the cbwfx member must be filled in with the size, in bytes, of this memory buffer.

Return value

Returns MMSYSERR_NOERROR if successful or an error otherwise. Possible return values include the following.

Return codeDescription
ACMERR_CANCELED

The user chose the Cancel button or the Close command on the System menu to close the dialog box.

ACMERR_NOTPOSSIBLE

The buffer identified by the pwfx member of the ACMFORMATCHOOSE structure is too small to contain the selected format.

MMSYSERR_INVALFLAG

At least one flag is invalid.

MMSYSERR_INVALHANDLE

The specified handle is invalid.

MMSYSERR_INVALPARAM

At least one parameter is invalid.

MMSYSERR_NODRIVER

A suitable driver is not available to provide valid format selections.

 

Requirements

Minimum supported client

Windows 2000 Professional [desktop apps only]

Minimum supported server

Windows 2000 Server [desktop apps only]

Header

Msacm.h

Library

Msacm32.lib

DLL

Msacm32.dll

Unicode and ANSI names

acmFormatChooseW (Unicode) and acmFormatChooseA (ANSI)

See also

Audio Compression Manager
Audio Compression Functions

 

 

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