nc-msacm-acmformatchoosehookproc.md

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NC:msacm.ACMFORMATCHOOSEHOOKPROC	ACMFORMATCHOOSEHOOKPROC (msacm.h)	The acmFormatChooseHookProc function specifies a user-defined function that hooks the acmFormatChoose dialog box. The acmFormatChooseHookProc name is a placeholder for an application-defined name.	_win32_acmFormatChooseHookProc acmFormatChooseHookProc acmFormatChooseHookProc callback acmFormatChooseHookProc callback function [Windows Multimedia] msacm/acmFormatChooseHookProc multimedia.acmformatchoosehookproc	multimedia\acmformatchoosehookproc.htm	Multimedia	75b11c0f-ae85-424d-b936-492d67440659	12/05/2018	_win32_acmFormatChooseHookProc, acmFormatChooseHookProc, acmFormatChooseHookProc callback, acmFormatChooseHookProc callback function [Windows Multimedia], msacm/acmFormatChooseHookProc, multimedia.acmformatchoosehookproc	msacm.h		Windows	Windows 2000 Professional [desktop apps only]	Windows 2000 Server [desktop apps only]													Windows			19H1	ACMFORMATCHOOSEHOOKPROC msacm/ACMFORMATCHOOSEHOOKPROC	c++	APIRef kbSyntax	UserDefined	Msacm.h	acmFormatChooseHookProc

ACMFORMATCHOOSEHOOKPROC callback function

-description

The acmFormatChooseHookProc function specifies a user-defined function that hooks the acmFormatChoose dialog box. The acmFormatChooseHookProc name is a placeholder for an application-defined name.

-parameters

-param hwnd

Window handle for the dialog box.

-param uMsg

Window message.

-param wParam

Message parameter.

-param lParam

Message parameter.

-remarks

If the hook function processes one of the WM_CTLCOLOR messages, this function must return a handle of the brush that should be used to paint the control background.

A hook function can optionally process the MM_ACM_FORMATCHOOSE message.

You should use this function the same way as you use the Common Dialog hook functions for customizing common dialog boxes.

-see-also

Audio Compression Functions

Audio Compression Manager