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MonitorAdapter.h
#include#include #include #include using std::vector;using namespace std;#define MAX_MONITOR_NAME 256static std::vector g_hMonitorGroup; // 显示器模式信息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;// 显示器信息struct MonitorInfo{ TCHAR szDevice[MAX_MONITOR_NAME]; // 显示器名称 std::vector m_vecModeInfo; // 当前名称的显示器支持的分辨率模式};typedef std::vector VEC_MONITORMODE_INFO; // 所有的显示器信息 class MonitorAdapter{public: MonitorAdapter(); ~MonitorAdapter(); // 回调函数 static int CALLBACK MonitorEnumProc(HMONITOR hMonitor, HDC hdc, LPRECT lpRMonitor, LPARAM dwData); // 得到所有显示器的名称 void GetAllMonitorName(VEC_MONITORMODE_INFO& m_vecMonitorListInfo); // 得到所有显示器的模式 void GetAllDisplayMode(VEC_MONITORMODE_INFO& m_vecMonitorListInfo); //得到屏幕当前分辨率 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);};
#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;}// 得到所有显示器的名称void MonitorAdapter::GetAllMonitorName(VEC_MONITORMODE_INFO& vecMonitorListInfo){ g_hMonitorGroup.clear(); ::EnumDisplayMonitors(NULL, NULL, MonitorEnumProc, 0); //vector ::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; } } //没有在列表中找到,则需要添加 if (itBeg == itEnd) { MonitorInfo tmpMonitorInfo; _tcscpy_s(tmpMonitorInfo.szDevice, sizeof(tmpMonitorInfo.szDevice), mixTemp.szDevice); vecMonitorListInfo.push_back(tmpMonitorInfo); } } }// 得到所有显示器的模式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 ::iterator itBeg_Mode = itBeg->m_vecModeInfo.begin(); vector ::iterator itEnd_Mode = itBeg->m_vecModeInfo.end(); for (NULL; itBeg_Mode != itEnd_Mode; ++itBeg_Mode) { // 如果已经在列表中找到,则结束本次循环 if ((itBeg_Mode->m_nWidth == devmode.dmPelsWidth) && (itBeg_Mode->m_nHeight == devmode.dmPelsHeight)) { bFind = true; break; } // 插入数据时,从 大到小排列 (按windows 分辨率设置,优先比较 宽) 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;} 转载地址：http://nvqxi.baihongyu.com/