//+------------------------------------------------------------------------- // // Microsoft Windows // // Copyright (C) Microsoft Corporation, 1999 - 1999 // // File: ddenummodesobj.cpp // //-------------------------------------------------------------------------- #include "stdafx.h" #include "Direct.h" #include "dms.h" #include "DDEnumModesObj.h" extern BOOL IsAllZeros(void *pStruct,DWORD size); extern "C" HRESULT PASCAL objEnumModes2Callback(LPDDSURFACEDESC2 lpDesc, void *lpArg) { DPF(1,"Entered objEnumModes2Callback\r\n"); C_dxj_DirectDrawEnumModesObject *pObj=(C_dxj_DirectDrawEnumModesObject*)lpArg; if (pObj==NULL) return DDENUMRET_OK; if (pObj->m_nCount >= pObj->m_nMax) { pObj->m_nMax += 10; if (pObj->m_pList) { void* tmp = realloc(pObj->m_pList,sizeof(DDSurfaceDesc2)* pObj->m_nMax); if (tmp) pObj->m_pList=(DDSurfaceDesc2*)tmp; else return DDENUMRET_CANCEL; } else pObj->m_pList=(DDSurfaceDesc2*)malloc(sizeof(DDSurfaceDesc2)* pObj->m_nMax); if (pObj->m_pList==NULL) { pObj->m_bProblem=TRUE; return FALSE; } } if (lpDesc==NULL) { pObj->m_bProblem=TRUE; return FALSE; } HRESULT hr=CopyOutDDSurfaceDesc2(&(pObj->m_pList[pObj->m_nCount]),lpDesc); if (FAILED(hr)){ pObj->m_bProblem=TRUE; return FALSE; } pObj->m_nCount++; return TRUE; } C_dxj_DirectDrawEnumModesObject::C_dxj_DirectDrawEnumModesObject() { m_nMax=0; m_pList=NULL; m_nCount=0; m_bProblem=FALSE; } C_dxj_DirectDrawEnumModesObject::~C_dxj_DirectDrawEnumModesObject() { //empty list if (m_pList){ free(m_pList); } } HRESULT C_dxj_DirectDrawEnumModesObject::create(LPDIRECTDRAW7 pdd, long flags, DDSurfaceDesc2 *desc, I_dxj_DirectDrawEnumModes **ppRet) { HRESULT hr; C_dxj_DirectDrawEnumModesObject *pNew=NULL; //ASSERT(ppRet,"C_dxj_DDEnumObject::create passed invalid arg"); *ppRet=NULL; if (!pdd) return E_INVALIDARG; pNew= new CComObject; if (!pNew) return E_OUTOFMEMORY; pNew->m_bProblem=FALSE; //note DDSurfaceDesc as a DDSURFACEDESC structure inside it. if ((desc==NULL)|| (IsAllZeros(desc,sizeof(DDSurfaceDesc2)))) { hr=pdd->EnumDisplayModes((DWORD)flags,NULL,pNew,objEnumModes2Callback); } else { DDSURFACEDESC2 desc2; hr=CopyInDDSurfaceDesc2(&desc2,desc); if (hr==S_OK){ hr=pdd->EnumDisplayModes((DWORD)flags,&desc2,pNew,objEnumModes2Callback); } } if (pNew->m_bProblem) hr=E_OUTOFMEMORY; if FAILED(hr) { free(pNew->m_pList); pNew->m_pList=NULL; delete pNew; return hr; } hr=pNew->QueryInterface(IID_I_dxj_DirectDrawEnumModes,(void**)ppRet); return hr; } HRESULT C_dxj_DirectDrawEnumModesObject::create(LPDIRECTDRAW4 pdd, long flags, DDSurfaceDesc2 *desc, I_dxj_DirectDrawEnumModes **ppRet) { HRESULT hr; C_dxj_DirectDrawEnumModesObject *pNew=NULL; //ASSERT(ppRet,"C_dxj_DDEnumObject::create passed invalid arg"); *ppRet=NULL; if (!pdd) return E_INVALIDARG; pNew= new CComObject; if (!pNew) return E_OUTOFMEMORY; pNew->m_bProblem=FALSE; //note DDSurfaceDesc as a DDSURFACEDESC structure inside it. if ((desc==NULL)|| (IsAllZeros(desc,sizeof(DDSurfaceDesc2)))) { hr=pdd->EnumDisplayModes((DWORD)flags,NULL,pNew,objEnumModes2Callback); } else { DDSURFACEDESC2 desc2; hr=CopyInDDSurfaceDesc2(&desc2,desc); if (hr==S_OK){ hr=pdd->EnumDisplayModes((DWORD)flags,&desc2,pNew,objEnumModes2Callback); } } if (pNew->m_bProblem) hr=E_OUTOFMEMORY; if FAILED(hr) { free(pNew->m_pList); pNew->m_pList=NULL; delete pNew; return hr; } hr=pNew->QueryInterface(IID_I_dxj_DirectDrawEnumModes,(void**)ppRet); return hr; } HRESULT C_dxj_DirectDrawEnumModesObject::getItem( long index, DDSurfaceDesc2 *info) { if (m_pList==NULL) return E_FAIL; if (index < 1) return E_INVALIDARG; if (index > m_nCount) return E_INVALIDARG; memcpy(info,&(m_pList[index-1]),sizeof(DDSurfaceDesc2)); return S_OK; } HRESULT C_dxj_DirectDrawEnumModesObject::getCount(long *retVal) { *retVal=m_nCount; return S_OK; }