tools: monitor report info

This commit is contained in:
yuyoyuppe
2020-09-04 13:12:04 +03:00
committed by Andrey Nekrasov
parent 24906e6fa5
commit 8fcb76e300
3 changed files with 239 additions and 0 deletions

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#include <Windows.h>
#include <iostream>
#include <ctime>
#include <fstream>
#include <sstream>
std::wstring last_error()
{
const DWORD error_code = GetLastError();
wchar_t* error_msg;
FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
nullptr,
error_code,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
reinterpret_cast<LPWSTR>(&error_msg),
0,
nullptr);
std::wstring result{ error_msg };
LocalFree(error_msg);
return result;
}
int report(std::wostream& os)
{
auto callback = [](HMONITOR monitor, HDC, RECT*, LPARAM prm) -> BOOL {
std::wostream& os = *(std::wostream*)prm;
MONITORINFOEX mi;
mi.cbSize = sizeof(mi);
if (GetMonitorInfo(monitor, &mi))
{
os << "GetMonitorInfo OK\n";
DISPLAY_DEVICE displayDevice = { sizeof(displayDevice) };
if (EnumDisplayDevices(mi.szDevice, 0, &displayDevice, 1))
{
if (displayDevice.StateFlags & DISPLAY_DEVICE_MIRRORING_DRIVER)
{
os << "EnumDisplayDevices OK[MIRRORING_DRIVER]: \n"
<< "\tDeviceID = " << displayDevice.DeviceID << '\n'
<< "\tDeviceKey = " << displayDevice.DeviceKey << '\n'
<< "\tDeviceName = " << displayDevice.DeviceName << '\n'
<< "\tDeviceString = " << displayDevice.DeviceString << '\n';
}
else
{
os << "EnumDisplayDevices OK:\n"
<< "\tDeviceID = " << displayDevice.DeviceID << '\n'
<< "\tDeviceKey = " << displayDevice.DeviceKey << '\n'
<< "\tDeviceName = " << displayDevice.DeviceName << '\n'
<< "\tDeviceString = " << displayDevice.DeviceString << '\n';
}
}
else
{
os << "EnumDisplayDevices FAILED: " << last_error() << '\n';
}
}
else
{
os << "GetMonitorInfo FAILED: " << last_error() << '\n';
}
return TRUE;
};
if (EnumDisplayMonitors(nullptr, nullptr, callback, (LPARAM)&os))
{
os << "EnumDisplayMonitors OK\n";
}
else
{
os << "EnumDisplayMonitors FAILED: " << last_error() << '\n';
}
return 0;
}
int main()
{
time_t rawtime;
struct tm* timeinfo;
char buffer[1024];
time(&rawtime);
timeinfo = localtime(&rawtime);
strftime(buffer, sizeof(buffer), "monitor-info-report-%d-%m-%Y-%H-%M-%S.txt", timeinfo);
std::string str(buffer);
std::wofstream of{ str };
std::wostringstream oss;
try
{
oss << "GetSystemMetrics = " << GetSystemMetrics(SM_CMONITORS) << '\n';
report(oss);
}
catch (std::exception& ex)
{
oss << "exception: " << ex.what() << '\n';
}
catch (...)
{
oss << "unknown exception: " << last_error() << '\n';
}
of << oss.str();
std::wcout << oss.str() << '\n';
return 0;
}

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