Source code of Windows XP (NT5)
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// DirectSoundFXEchoPage.cpp : Implementation of CDirectSoundFXEchoPage
#include "stdafx.h"
#include "Dsdmoprp.h"
#include "DirectSoundFXEchoPage.h"
/////////////////////////////////////////////////////////////////////////////
// CDirectSoundFXEchoPage
const CRadioChoice::ButtonEntry g_rgPanDelayButtons[] =
{
IDC_RADIO_PANNED, 1,
IDC_RADIO_NOTPANNED, 0,
0
};
CDirectSoundFXEchoPage::CDirectSoundFXEchoPage()
: m_radioPanDelay(g_rgPanDelayButtons)
{
m_dwTitleID = IDS_TITLEDirectSoundFXEchoPage;
m_dwHelpFileID = IDS_HELPFILEDirectSoundFXEchoPage;
m_dwDocStringID = IDS_DOCSTRINGDirectSoundFXEchoPage;
m_rgpHandlers[0] = &m_sliderWetDryMix;
m_rgpHandlers[1] = &m_sliderFeedback;
m_rgpHandlers[2] = &m_sliderLeftDelay;
m_rgpHandlers[3] = &m_sliderRightDelay;
m_rgpHandlers[4] = &m_radioPanDelay;
m_rgpHandlers[5] = NULL;
}
STDMETHODIMP CDirectSoundFXEchoPage::SetObjects(ULONG nObjects, IUnknown **ppUnk)
{
if (nObjects < 1 || nObjects > 1)
return E_UNEXPECTED;
HRESULT hr = ppUnk[0]->QueryInterface(IID_IDirectSoundFXEcho, reinterpret_cast<void**>(&m_IDSFXEcho));
return hr;
}
STDMETHODIMP CDirectSoundFXEchoPage::Apply(void)
{
if (!m_IDSFXEcho)
return E_UNEXPECTED;
DSFXEcho dsfxecho;
ZeroMemory(&dsfxecho, sizeof(DSFXEcho));
dsfxecho.fWetDryMix = m_sliderWetDryMix.GetValue();
dsfxecho.fFeedback = m_sliderFeedback.GetValue();
dsfxecho.fLeftDelay = m_sliderLeftDelay.GetValue();
dsfxecho.fRightDelay = m_sliderRightDelay.GetValue();
dsfxecho.lPanDelay = m_radioPanDelay.GetChoice(*this);
HRESULT hr = m_IDSFXEcho->SetAllParameters(&dsfxecho);
if (FAILED(hr))
return hr;
SetDirty(FALSE);
return S_OK;
}
LRESULT CDirectSoundFXEchoPage::OnInitDialog(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
if (!m_IDSFXEcho)
return 1;
DSFXEcho dsfxecho;
ZeroMemory(&dsfxecho, sizeof(DSFXEcho));
m_IDSFXEcho->GetAllParameters(&dsfxecho);
m_sliderWetDryMix.Init(GetDlgItem(IDC_SLIDER_WetDryMix), GetDlgItem(IDC_EDIT_WetDryMix), 0, 100, false);
m_sliderWetDryMix.SetValue(dsfxecho.fWetDryMix);
m_sliderFeedback.Init(GetDlgItem(IDC_SLIDER_Feedback), GetDlgItem(IDC_EDIT_Feedback), 0, 100, false);
m_sliderFeedback.SetValue(dsfxecho.fFeedback);
m_sliderLeftDelay.Init(GetDlgItem(IDC_SLIDER_LeftDelay), GetDlgItem(IDC_EDIT_LeftDelay), 1, 2000, false);
m_sliderLeftDelay.SetValue(dsfxecho.fLeftDelay);
m_sliderRightDelay.Init(GetDlgItem(IDC_SLIDER_RightDelay), GetDlgItem(IDC_EDIT_RightDelay), 1, 2000, false);
m_sliderRightDelay.SetValue(dsfxecho.fRightDelay);
m_radioPanDelay.SetChoice(*this, dsfxecho.lPanDelay);
return 1;
}
LRESULT CDirectSoundFXEchoPage::OnControlMessage(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
LRESULT lr = MessageHandlerChain(m_rgpHandlers, uMsg, wParam, lParam, bHandled);
if (bHandled)
SetDirty(TRUE);
return lr;
}