acmFilterChoose function (msacm.h)
The acmFilterChoose function creates an ACM-defined dialog box that enables the user to select a waveform-audio filter.
Syntax
MMRESULT ACMAPI acmFilterChoose(
LPACMFILTERCHOOSE pafltrc
);
Parameters
pafltrc
Pointer to an ACMFILTERCHOOSE structure that contains information used to initialize the dialog box. When acmFilterChoose returns, this structure contains information about the user's filter selection.
The pwfltr member of this structure must contain a valid pointer to a memory location that will contain the returned filter header structure. The cbwfltr 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 error 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 [ACMFILTERCHOOSE]() structure is too small to contain the selected filter. |
|
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 filter 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 |