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A small snippet displaying how to get the rectangles structures (coordinates) associated with all the connected screens/monitors.
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/********************************************************************* | |
* \file CaptureMonitorsRects.cpp | |
* \brief capture monitors rectangles handles in a custom structure. | |
* | |
* \author SuperKogito | |
* \date July 2020 | |
* | |
* @note: | |
* references and sources: | |
* | |
* | |
*********************************************************************/ | |
#include <windows.h> | |
#include <vector> | |
#include <iostream> | |
/** | |
* Structure that includes all screen hanldes and rectangles. | |
*/ | |
struct cMonitorsVec | |
{ | |
std::vector<int> iMonitors; | |
std::vector<HMONITOR> hMonitors; | |
std::vector<HDC> hdcMonitors; | |
std::vector<RECT> rcMonitors; | |
static BOOL CALLBACK MonitorEnum(HMONITOR hMon, HDC hdc, LPRECT lprcMonitor, LPARAM pData) | |
{ | |
cMonitorsVec* pThis = reinterpret_cast<cMonitorsVec*>(pData); | |
pThis->hMonitors.push_back(hMon); | |
pThis->hdcMonitors.push_back(hdc); | |
pThis->rcMonitors.push_back(*lprcMonitor); | |
pThis->iMonitors.push_back(pThis->hdcMonitors.size()); | |
return TRUE; | |
} | |
cMonitorsVec() | |
{ | |
EnumDisplayMonitors(0, 0, MonitorEnum, (LPARAM)this); | |
} | |
}; | |
int main() | |
{ | |
cMonitorsVec Monitors; | |
for (int monitorIndex=0; monitorIndex < Monitors.iMonitors.size(); monitorIndex++) | |
{ | |
std::wcout << "Screen id: " << monitorIndex << std::endl; | |
std::wcout << "-----------------------------------------------------" << std::endl; | |
std::wcout << " - screen left-top corner coordinates : (" << Monitors.rcMonitors[monitorIndex].left | |
<< "," << Monitors.rcMonitors[monitorIndex].top | |
<< ")" << std::endl; | |
std::wcout << " - screen dimensions (width x height) : (" << std::abs(Monitors.rcMonitors[monitorIndex].right - Monitors.rcMonitors[monitorIndex].left) | |
<< "," << std::abs(Monitors.rcMonitors[monitorIndex].top - Monitors.rcMonitors[monitorIndex].bottom) | |
<< ")" << std::endl; | |
std::wcout << "-----------------------------------------------------" << std::endl; | |
} | |
} |
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