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POStrange Results with ChangeDisplaySettings and Intel graphics card
 

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  1. POStrange Results with ChangeDisplaySettings and Intel graphics card
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    <p>I've been getting weird results with ChangeDisplaySettings and my Intel Graphics card. I find that when I try to go fullscreen, it won't do it in the same way as other programs. </p> <p>My Intel control panel lets me handle different resolutions in 3 ways: Stretching the image, using the original resolution but centering the image, or Maintaining the aspect ratio with letterboxing. I set the default to maintain the aspect ratio, and some old games on my computer end up doing that. However, my program won't do the same. Instead, it gets centered.</p> <p>Here's the code I'm using:<br></p> <pre><code>#include "windows.h" DEVMODE DevMode; DEVMODE UsedDevMode; struct stOptions { char szFiles[260]; int xres; int yres; int bpp; bool bMultiMon; }; stOptions options; void ApplyOptions(HWND hWnd) { int iModeNum=0; bool bRes, bBpp, bFreq; bRes=bBpp=bFreq=false; bool bResult=true; bool bChanged=false; int iFreq; EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &DevMode); //Get the current frequency iFreq=DevMode.dmDisplayFrequency; //With this, I try to find a DevMode that will work for the display. If it can't match all of the user's //preferences, it will at least try to match as much as it can. while (bResult) { bResult=EnumDisplaySettings(NULL, iModeNum, &DevMode); if ((DevMode.dmPelsWidth==options.xres)&&(DevMode.dmPelsHeight==options.yres)) { if (!bRes) EnumDisplaySettings(NULL, iModeNum, &UsedDevMode); bRes=true; bChanged=true; if (DevMode.dmBitsPerPel==options.bpp) { if (!bBpp) EnumDisplaySettings(NULL, iModeNum, &UsedDevMode); bBpp=true; if (DevMode.dmDisplayFrequency==iFreq) { EnumDisplaySettings(NULL, iModeNum, &UsedDevMode); bFreq=true; break; } } } iModeNum++; } if (!bChanged) { //TODO: add error handling } ChangeDisplaySettings(&UsedDevMode, CDS_FULLSCREEN); MoveWindow(hWnd, 0, 0, options.xres, options.yres, true); }</code></pre> <p>I'd like to know if anyone else with an intel card has this problem.</p> <p>Thanks in advance!</p>
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