You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
94 lines
2.8 KiB
94 lines
2.8 KiB
/*==========================================================================
|
|
*
|
|
* Copyright (C) 1999 Microsoft Corporation. All Rights Reserved.
|
|
*
|
|
* File: peakmetr.h
|
|
* Content: Implements a peak meter custom control
|
|
*
|
|
* History:
|
|
* Date By Reason
|
|
* ==== == ======
|
|
* 09/22/99 pnewson Created
|
|
***************************************************************************/
|
|
|
|
#ifndef _PEAKMETR_H_
|
|
#define _PEAKMETR_H_
|
|
|
|
|
|
// How to use this custom control
|
|
//
|
|
// In your code:
|
|
// 1) Include peakmetr.h in your project
|
|
// 2) Create an instance of the CPeakMeterWndClass class
|
|
// 3) Call Register() on that instance to register the window class
|
|
// 4) Send the control PM_SETMAX, PM_SETMIN, PM_SETCUR, PM_SETSTEPS
|
|
// messages as required.
|
|
// 5) When you are no longer using the control, call unregister
|
|
// 6) Destroy the CPeakMeterWndClass object
|
|
//
|
|
// In the dialog editor
|
|
// 1) Add a "Custom Control" to your dialog box
|
|
// 2) In the properties for that custom control, specify
|
|
// "DirectPlayVoicePeakMeter" for the window class
|
|
|
|
// Peak Meter windows messages:
|
|
//
|
|
// PM_SETMIN
|
|
// wParam = 0;
|
|
// lParam = (LPARAM)dwNewMinValue;
|
|
//
|
|
// Set the new minimum value for the peak meter, i.e. the
|
|
// value that represents the bottom of the meter range.
|
|
// If this message is not sent, the control defaults to 0.
|
|
// The message returns an HRESULT
|
|
//
|
|
// PM_SETMAX
|
|
// wParam = 0;
|
|
// lParam = (LPARAM)dwNewMaxValue;
|
|
//
|
|
// Set the new maximum value for the peak meter, i.e. the
|
|
// value that represents the top of the meter range.
|
|
// If this message is not sent, the control defaults to 0xffffffff.
|
|
// The message returns an HRESULT
|
|
//
|
|
// PM_SETCUR
|
|
// wParam = 0;
|
|
// lParam = (LPARAM)dwNewCurValue;
|
|
//
|
|
// Set the new current value for the peak meter, i.e. the
|
|
// value tells the meter where in it's range it should be.
|
|
// If this message is not sent, the control defaults to 0.
|
|
//
|
|
// Sending this message causes the control to call InvalidateRgn
|
|
// on its window, but does not call UpdateWindow. This allows
|
|
// the caller to be lazy or quick about actually redrawing
|
|
// the peak meter.
|
|
// The message returns an HRESULT
|
|
//
|
|
// PM_SETSTEPS
|
|
// wParam = 0;
|
|
// lParam = (LPARAM)dwNewMaxValue;
|
|
//
|
|
// Suggest to the peak meter the number of bars it should
|
|
// display. The bars have a minimum size, so depending on
|
|
// the size of the control, the peak meter may not be able
|
|
// to honor the request.
|
|
// If this message is not sent, the control defaults to 20
|
|
// The message returns an HRESULT
|
|
|
|
#define PM_SETMAX WM_USER + 1
|
|
#define PM_SETMIN WM_USER + 2
|
|
#define PM_SETCUR WM_USER + 3
|
|
#define PM_SETSTEPS WM_USER + 4
|
|
|
|
class CPeakMeterWndClass
|
|
{
|
|
private:
|
|
HINSTANCE m_hinst;
|
|
|
|
public:
|
|
HRESULT Register();
|
|
HRESULT Unregister();
|
|
};
|
|
|
|
#endif
|