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Alex Fr

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About Alex Fr

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    Programming
  1. galop1n, I played with DPI by using SetProcessDpiAwareness API and setting the text size to 100% in Windows Display Settings. This helped to solve the problem, thank you for pointing in right direction.
  2. I make DXGI adapters and monitors enumeration. The second monitor connected to my computer is Dell P2715Q, which has 3840*2160 resolution. However, the program reports it as 2560*1440, the second available resolution. Minimal code to reproduce: #include "stdafx.h" #include <Windows.h> #include <stdio.h> #include <tchar.h> #include <iostream> #include <DXGI.h> #pragma comment(lib, "DXGI.lib") using namespace std; int main() { IDXGIFactory1* pFactory1; HRESULT hr = CreateDXGIFactory1(__uuidof(IDXGIFactory1), (void**)(&pFactory1)); if (FAILED(hr)) { wcout << L"CreateDXGIFactory1 failed. " << endl; return 0; } for (UINT i = 0;; i++) { IDXGIAdapter1* pAdapter1 = nullptr; hr = pFactory1->EnumAdapters1(i, &pAdapter1); if (hr == DXGI_ERROR_NOT_FOUND) { // no more adapters break; } if (FAILED(hr)) { wcout << L"EnumAdapters1 failed. " << endl; return 0; } DXGI_ADAPTER_DESC1 desc; hr = pAdapter1->GetDesc1(&desc); if (FAILED(hr)) { wcout << L"GetDesc1 failed. " << endl; return 0; } wcout << L"Adapter: " << desc.Description << endl; for (UINT j = 0;; j++) { IDXGIOutput *pOutput = nullptr; HRESULT hr = pAdapter1->EnumOutputs(j, &pOutput); if (hr == DXGI_ERROR_NOT_FOUND) { // no more outputs break; } if (FAILED(hr)) { wcout << L"EnumOutputs failed. " << endl; return 0; } DXGI_OUTPUT_DESC desc; hr = pOutput->GetDesc(&desc); if (FAILED(hr)) { wcout << L"GetDesc1 failed. " << endl; return 0; } wcout << L" Output: " << desc.DeviceName << L" (" << desc.DesktopCoordinates.left << L"," << desc.DesktopCoordinates.top << L")-(" << (desc.DesktopCoordinates.right - desc.DesktopCoordinates.left) << L"," << (desc.DesktopCoordinates.bottom - desc.DesktopCoordinates.top) << L")" << endl; } } return 0; } Program output: Adapter: Intel(R) Iris(TM) Pro Graphics 6200 Output: \\.\DISPLAY1 (0,0)-(1920,1200) Output: \\.\DISPLAY2 (1920,0)-(2560,1440) DISPLAY2 is reported with low resolution. Environment: Windows 10 x64 Intel(R) Iris(TM) Pro Graphics 6200 DELL P2715Q What can cause this behavior: DirectX restrictions, video memory, display adapter, driver, monitor? How can I fix this and get full available resolution?
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