/*
Sound Generator Remote Control Example
Borland C++ Builder notation
Copyright © Oleg Ya. Shmelyoff 2000-2006
shmelyoff@newmail.ru 
last revision 17.11.2006 2:37
*/

#include <winuser.h> 
// declarations:
UINT Start_SoundGen_MSG,
	  Stop_SoundGen_MSG,
     Show_SoundGen_MSG,
     Set_Frequency_MSG,
     Set_Attenuation_MSG;
     
void __fastcall Initialization();
HWND __fastcall FindWindowSFG();
void __fastcall ShowSoundGenerator(bool);
void __fastcall StartSoundGen(unsigned int BitsPerSample,
										unsigned int Channels,
										unsigned int Rate);
void __fastcall StopSoundGen();
void __fastcall SetSoundGeneratorFrequency(float L,float R);
void __fastcall SetSoundGeneratorAttenuation(float L,float R);

//Implementations:
//---------------------------------------------------------------------------
void __fastcall Initialization()
{
Start_SoundGen_MSG  =RegisterWindowMessage("Start_SoundGen_MSG");
Stop_SoundGen_MSG   =RegisterWindowMessage("Stop_SoundGen_MSG");
Show_SoundGen_MSG   =RegisterWindowMessage("Show_SoundGen_MSG");
Set_Frequency_MSG   =RegisterWindowMessage("Set_Frequency_MSG");
Set_Attenuation_MSG =RegisterWindowMessage("Set_Attenuation_MSG");
}

//---------------------------------------------------------------------------
void __fastcall ShowSoundGenerator(bool show)
{
HWND   SoundGenWindowHandle,SoundGenMainWindowHandle=0;
SoundGenWindowHandle=FindWindowSFG();
if (SoundGenWindowHandle)
 SoundGenMainWindowHandle=FindWindow("TSoundGenMainWindow","SoundGen");

if (SoundGenMainWindowHandle)
 {
 ShowWindow(SoundGenMainWindowHandle,
            show?SW_SHOW:SW_HIDE);
 PostMessage(SoundGenMainWindowHandle,
         Show_SoundGen_MSG,show?SW_SHOW:SW_HIDE,show?SW_SHOW:SW_HIDE);
 }
}
//---------------------------------------------------------------------------
HWND __fastcall FindWindowSFG()
{
return FindWindow("TApplication","Shmelyoff Sound Frequency Generator");
}
//---------------------------------------------------------------------------
void __fastcall StartSoundGen(unsigned int BitsPerSample,unsigned int Channels,unsigned int Rate)
{
HWND   SoundGenWindowHandle;
SoundGenWindowHandle=FindWindowSFG();
if (SoundGenWindowHandle)
  PostMessage(SoundGenWindowHandle,Start_SoundGen_MSG,
            BitsPerSample|(Channels<<8),
            Rate);
}
//---------------------------------------------------------------------------
void __fastcall StopSoundGen()
{
HWND SoundGenWindowHandle;
SoundGenWindowHandle=FindWindowSFG();
if (SoundGenWindowHandle)
  PostMessage(SoundGenWindowHandle,Stop_SoundGen_MSG,0,0);
}
//---------------------------------------------------------------------------
void __fastcall SetSoundGeneratorFrequency(float L,float R)
{
HWND SoundGenWindowHandle;
SoundGenWindowHandle=FindWindowSFG();
if (SoundGenWindowHandle)
  PostMessage(SoundGenWindowHandle,Set_Frequency_MSG,(int&)R,(int&)L);
}
//---------------------------------------------------------------------------
void __fastcall SetSoundGeneratorAttenuation(float L,float R)
{
HWND SoundGenWindowHandle;
SoundGenWindowHandle=FindWindowSFG();
if (SoundGenWindowHandle)
  PostMessage(SoundGenWindowHandle,Set_Attenuation_MSG,(int&)R,(int&)L);
}
//---------------------------------------------------------------------------