MonitorAdapter.h

#include <atlstr.h> #include <vector> #include <WinDef.h> #include <tchar.h> using std::vector;using namespace std;#define MAX_MONITOR_NAME 256static std::vector<HMONITOR> g_hMonitorGroup; // 顯示器模式信息 typedef struct MonitorModeInfo_t {unsigned int m_nWidth; unsigned int m_nHeight;MonitorModeInfo_t(int nWidth, int nHeight) : m_nWidth(nWidth), m_nHeight(nHeight) {} }MonitorModeInfo;// 顯示器信息 struct MonitorInfo {TCHAR szDevice[MAX_MONITOR_NAME]; // 顯示器名稱std::vector<MonitorModeInfo> m_vecModeInfo; // 當前名稱的顯示器支持的分辨率模式 };typedef std::vector<MonitorInfo> VEC_MONITORMODE_INFO; // 所有的顯示器信息 class MonitorAdapter { public:MonitorAdapter();~MonitorAdapter();// 回調函數static int CALLBACK MonitorEnumProc(HMONITOR hMonitor, HDC hdc,LPRECT lpRMonitor,LPARAM dwData);// 得到所有顯示器的名稱void GetAllMonitorName(VEC_MONITORMODE_INFO& m_vecMonitorListInfo);// 得到所有顯示器的模式void GetAllDisplayMode(VEC_MONITORMODE_INFO& m_vecMonitorListInfo);//得到屏幕當前分辨率void GetCurrentReselotion(int& nWidth,int& nHeight,int& nFreq,int& nBits);//修改分辨率int ChangMonitorReselotion(HMONITOR hMonitor,const int nWidth,const int nHight,const int nFre,const int nColorBits); };
MonitorAdapter.cpp #include "stdafx.h" #include "MonitorAdapter.h"MonitorAdapter::MonitorAdapter(void) { }MonitorAdapter::~MonitorAdapter(void) { }int CALLBACK MonitorAdapter::MonitorEnumProc(HMONITOR hMonitor, HDC hdc,LPRECT lpRMonitor,LPARAM dwData) {g_hMonitorGroup.push_back(hMonitor);return 1; }// 得到所有顯示器的名稱 void MonitorAdapter::GetAllMonitorName(VEC_MONITORMODE_INFO& vecMonitorListInfo) {g_hMonitorGroup.clear();::EnumDisplayMonitors(NULL, NULL, MonitorEnumProc, 0);//vector<HMONITOR>::iterator ithMoniter = g_hMonitorGroup.begin();for(int i = 0; i < g_hMonitorGroup.size();i++){MONITORINFOEX mixTemp;memset(&mixTemp, 0, sizeof(MONITORINFOEX));mixTemp.cbSize = sizeof(MONITORINFOEX);GetMonitorInfo(g_hMonitorGroup[i], &mixTemp);VEC_MONITORMODE_INFO::iterator itBeg = vecMonitorListInfo.begin();VEC_MONITORMODE_INFO::iterator itEnd = vecMonitorListInfo.end();for(; itBeg != itEnd; ++itBeg){if( 0 == _tcscmp(mixTemp.szDevice, itBeg->szDevice)){break;}}//沒有在列表中找到,則需要添加if (itBeg == itEnd) {MonitorInfo tmpMonitorInfo;_tcscpy_s(tmpMonitorInfo.szDevice, sizeof(tmpMonitorInfo.szDevice), mixTemp.szDevice);vecMonitorListInfo.push_back(tmpMonitorInfo);}} }// 得到所有顯示器的模式 void MonitorAdapter::GetAllDisplayMode(VEC_MONITORMODE_INFO& vecMonitorListInfo) {GetAllMonitorName(vecMonitorListInfo);bool bRetVal;DEVMODE devmode;VEC_MONITORMODE_INFO::iterator itBeg = vecMonitorListInfo.begin();VEC_MONITORMODE_INFO::iterator itEnd = vecMonitorListInfo.end();for (NULL; itBeg != itEnd; ++itBeg){int iMode = 0;do{bRetVal = ::EnumDisplaySettings(itBeg->szDevice, iMode, &devmode);iMode++;if (bRetVal){bool bFind = false;vector<MonitorModeInfo>::iterator itBeg_Mode = itBeg->m_vecModeInfo.begin();vector<MonitorModeInfo>::iterator itEnd_Mode = itBeg->m_vecModeInfo.end();for (NULL; itBeg_Mode != itEnd_Mode; ++itBeg_Mode){// 如果已經在列表中找到,則結束本次循環if ((itBeg_Mode->m_nWidth == devmode.dmPelsWidth) && (itBeg_Mode->m_nHeight == devmode.dmPelsHeight)){bFind = true;break;}// 插入數據時,從 大到小排列 (按windows 分辨率設置,優先比較 寬) if ((itBeg_Mode->m_nWidth < devmode.dmPelsWidth) ||((itBeg_Mode->m_nWidth == devmode.dmPelsWidth) && (itBeg_Mode->m_nHeight < devmode.dmPelsHeight))){ break;}}if(!bFind){if (itBeg_Mode == itEnd_Mode){itBeg->m_vecModeInfo.push_back(MonitorModeInfo(devmode.dmPelsWidth, devmode.dmPelsHeight)); }else{itBeg->m_vecModeInfo.insert(itBeg_Mode, MonitorModeInfo(devmode.dmPelsWidth, devmode.dmPelsHeight)); }}}}while (bRetVal); } }int MonitorAdapter::ChangMonitorReselotion(HMONITOR hMonitor,const int nWidth,const int nHight,const int nFre,const int nColorBits) {if ( NULL == hMonitor ){return -1;}MONITORINFOEX mi;mi.cbSize = sizeof(mi);GetMonitorInfo( hMonitor , &mi);DEVMODE DeviceMode;ZeroMemory(&DeviceMode, sizeof(DEVMODE));DeviceMode.dmSize = sizeof(DEVMODE); BOOL bFlag = TRUE;bFlag = EnumDisplaySettings(mi.szDevice, ENUM_CURRENT_SETTINGS, &DeviceMode);if ( bFlag != TRUE ){return -1;} if (DeviceMode.dmPelsWidth == nWidth && DeviceMode.dmPelsHeight == nHight ){return 0;}DeviceMode.dmDisplayFlags = 0;DeviceMode.dmPelsWidth= nWidth; DeviceMode.dmPelsHeight = nHight;DeviceMode.dmFields = DM_PELSWIDTH | DM_PELSHEIGHT | DM_BITSPERPEL | DM_DISPLAYFREQUENCY ;int nRet = ChangeDisplaySettingsEx(mi.szDevice, &DeviceMode, NULL, CDS_GLOBAL | CDS_NORESET | CDS_UPDATEREGISTRY, NULL);if (DISP_CHANGE_BADMODE == nRet){ChangeDisplaySettingsEx(mi.szDevice, &DeviceMode, NULL, CDS_GLOBAL | CDS_NORESET | CDS_UPDATEREGISTRY, NULL); }if ( DISP_CHANGE_SUCCESSFUL == nRet ){return 0;}return -1; }void MonitorAdapter::GetCurrentReselotion(int& nWidth,int& nHeight,int& nFreq,int& nBits) {DEVMODE DeviceMode;EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &DeviceMode);nWidth = DeviceMode.dmPelsWidth;nHeight = DeviceMode.dmPelsHeight;nFreq = DeviceMode.dmDisplayFrequency;nBits = DeviceMode.dmBitsPerPel; }

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