Public float GetDisplayScaleFactor(IntPtr windowHandle) Static extern int GetDpiForWindow(IntPtr hWnd) This is a very old question, but since Windows 8.1, one can use various other functions, like GetDpiForWindow do something nice for people who can't see very well.
Int logpixelsy = GetDeviceCaps(desktop, (int)DeviceCap.LOGPIXELSY) įloat screenScalingFactor = (float)PhysicalScreenHeight / (float)LogicalScreenHeight įloat dpiScalingFactor = (float)logpixelsy / (float)96 Int PhysicalScreenHeight = GetDeviceCaps(desktop, (int)DeviceCap.DESKTOPVERTRES) Int LogicalScreenHeight = GetDeviceCaps(desktop, (int)DeviceCap.VERTRES) Static extern int GetDeviceCaps(IntPtr hdc, int nIndex) Īnd usage: Graphics g = Graphics.FromHwnd(IntPtr.Zero) Not sure why this is the case, but this code seems to work for any scale setting. I tested about 20 different scaling factors, and the DPI always returns as 96, except for when set at 125%, which returns a DPI of 120. Microsoft also suggests installing a preview version of the ARM64 C++ redistributable, too, in this initial release.Using Farshid T's answer as a base works in every scaling factor, except for 125%. The process involves enrolling a device into the Windows Insider program and installing new Qualcomm Adreno drivers as well. You can see instructions on how to get started from Microsoft. There are likely to be bugs, which is why Microsoft is seeking feedback from Windows Insider beta testers first. It is important to note that this is still in preview. Microsoft says that these apps will be able to run as 64-bit through 64-bit app-emulation, and will benefit from having more memory. The performance of other apps such as Google Chrome can also improve, too, thanks to this emulation. Basically, this means all modern Windows apps now work on these devices, as long as they are enrolled in the Windows Insider program. You can now install engineering apps like Autodesk, or games like Rocket League, which are 64-bit and 圆4 only. That’s why we are working on expanding the capability of our emulation to include 圆4 applications and sharing this first preview to gather feedback,” said Microsoft.įor those who own Windows 10 on ARM devices like the Surface Pro X, Samsung Galaxy Book S, or Lenovo Flex 5G, this means app compatibility problems that plagued these devices at launch will no longer be an issue. “With developers increasingly supporting ARM64 apps natively, emulating 圆4 apps is an important step in our journey with Windows 10 on ARM. Yes, you can use both Mac and Windows - here are some tips to get started
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