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Code Issues Releases Wiki Activity

Fixed DPI-scaling problem in the Ambilight-Example

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This commit is contained in:
Darth Affe 2017-04-08 15:17:36 +02:00
parent 295a56ca00
commit 0b92068fe6
1 changed files with 22 additions and 0 deletions
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22
Examples/Ambilight/Example_Ambilight_full/TakeAsIs/ScreenCapturing/DX9ScreenCapture.cs
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@ -1,6 +1,7 @@
using System;
using System.Runtime.InteropServices;
using System.Windows.Media;
using Microsoft.Win32;
using SharpDX;
using SharpDX.Direct3D9;
@ -27,6 +28,14 @@ namespace Example_Ambilight_full.TakeAsIs.ScreenCapturing
Width = (int)System.Windows.SystemParameters.PrimaryScreenWidth;
Height = (int)System.Windows.SystemParameters.PrimaryScreenHeight;
//DarthAffe 08.04.2017: Fix for system using windows-scaling. The primary screen size is reported 'wrong'.
double scaling = GetScaling();
if (Math.Abs(scaling - 1.0) > 0.01)
{
Width = (int)(Width / scaling);
Height = (int)(Height / scaling);
}
PresentParameters presentParams = new PresentParameters(Width, Height)
{
Windowed = true,
@ -42,6 +51,19 @@ namespace Example_Ambilight_full.TakeAsIs.ScreenCapturing
#region Methods
private double GetScaling()
{
try
{
int currentDpi = (int)Registry.GetValue("HKEY_CURRENT_USER\\Control Panel\\Desktop", "LogPixels", 96);
return 96.0 / currentDpi;
}
catch
{
return 1.0;
}
}
public byte[] CaptureScreen()
{
_device.GetFrontBufferData(0, _surface);