acmFormatChoose function (msacm.h)
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 |
|---|---|
|
The user chose the Cancel button or the Close command on the System menu to close the dialog box. |
|
The buffer identified by the pwfx member of the ACMFORMATCHOOSE structure is too small to contain the selected format. |
|
At least one flag is invalid. |
|
The specified handle is invalid. |
|
At least one parameter is invalid. |
|
A suitable driver is not available to provide valid format selections. |
Requirements
| Requirement | Value |
|---|---|
| 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 |