C / C++ / MFC

john5632 wrote:

How to do in hidden mode?

OpenDevice_out();      // initialises the wave format and calls waveOutOpen ()
	PrepareBuffers_out();       // calls waveOutPrepareHeader ()
	
        mRes=waveOutWrite(m_hWaveOut, m_stWHDR_out, sizeof(WAVEHDR));
				
	if(mRes!=MMSYSERR_NOERROR)
	{
	     StoreError(mRes,FALSE,"File: %s ,Line Number:%d",__FILE__,__LINE__);
	     throw m_csErrorText;
	}

	UnPrepareBuffers_out();     // calls waveOutUnprepareHeader
	waveOutClose(m_hWaveOut);
	waveOutPause(m_hWaveOut);
	waveOutReset(m_hWaveOut);

Nelek wrote:

CSomeDialog::SomeMethod()
{
HANDLE p_Dlg = GetDlgItem((HANDLE)this, IDC_YOURDIALOG);
//...
}

1. GetDlgItem's first parameter is a HWND, not a HANDLE. Your code will give a compiler error.
2. Even is the code was modified to look like the following, it would still be wrong:
   HWND p_Dlg = GetDlgItem((HWND)this, IDC_YOURDIALOG);
   Using what in this case is essentially a reinterpret_cast doesn't make a pointer a HWND. The cast just tells the compiler that although it knows a pointer isn't a HWND and would normally not normally compile code that incorrectly assumes it is, that in this case it should just shut-up and plough on.

Anu_Bala wrote:

Im using Setwindowpos of one dialog in another class.

Anu_Bala wrote:

if i use Setwindowpos,it shows arror.