acmFormatChoose function

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

Syntax

MMRESULT ACMAPI acmFormatChoose(
  LPACMFORMATCHOOSE pafmtc
);

Parameters

pafmtc

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 code Description
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]
Target Platform Windows
Header msacm.h
Library Msacm32.lib
DLL Msacm32.dll

See Also

Audio Compression Functions

Audio Compression Manager