C # API Get system DPI zoom multiple and resolution size

Source: C # API gets system DPI zoom multiple and resolution size

Using System;  Using System.Drawing;    Using System.Runtime.InteropServices; Namespace Xydes {public class PrimaryScreen {#region Win32 API [DllImport ("user32.d                  ll ")] static extern IntPtr GetDC (IntPtr ptr);                  [DllImport ("Gdi32.dll")] static extern int GetDeviceCaps (INTPTR hdc,//Handle to DC                  int NIndex//index of capability); [DllImport ("user32.dll", EntryPoint = "ReleaseDC")] static extern IntPtr ReleaseDC (IntPtr hWnd, IntPtr H          DC);                  #endregion #region DeviceCaps constant const int horzres = 8;                  const int vertres = 10;                  const int LOGPIXELSX = 88;                  const int logpixelsy = 90;                  const int desktopvertres = 117;          const int desktophorzres = 118; #endregion #region Properties//<summary>///Get screen resolution current physical size///</summary> public static size Workingarea {                      get {IntPtr hdc = GetDC (IntPtr.Zero);                      Size size = new size (); Size.                      Width = GetDeviceCaps (hdc, horzres); Size.                      Height = GetDeviceCaps (hdc, vertres);                      ReleaseDC (IntPtr.Zero, HDC);                      return size;              }}///<summary>///current system dpi_x size is usually///</summary> public static int Dpix {get {IntPtr hdc = GetDC (in                      Tptr.zero);                      int Dpix = GetDeviceCaps (hdc, LOGPIXELSX);                      ReleaseDC (IntPtr.Zero, HDC);                  return Dpix; }}///<summary>//Current system dpi_y size is generally </summary&Gt public static int Dpiy {get {IntPtr hdc = GetDC (intp Tr.                      Zero);                      int Dpix = GetDeviceCaps (Hdc,logpixelsy);                      ReleaseDC (IntPtr.Zero, HDC);                  return Dpix; }}///<summary>//Get the desktop resolution size of the real setting///</summary> P Ublic static Size DESKTOP {get {IntPtr hdc = GetDC (I                      Ntptr.zero);                      Size size = new size (); Size.                      Width = GetDeviceCaps (hdc,desktophorzres); Size.                      Height = GetDeviceCaps (hdc, desktopvertres);                      ReleaseDC (IntPtr.Zero, HDC);                      return size;              }}///<summary>//Get width Scaling percentage///</summary> public static Float ScaleX {get {IntPtr hdc = GetDC (IntPtr.Zero);                      int t = GetDeviceCaps (hdc, desktophorzres);                      int d = GetDeviceCaps (hdc, horzres);                       float ScaleX = (float) getdevicecaps (hdc, desktophorzres)/(float) getdevicecaps (hdc, horzres);                      ReleaseDC (IntPtr.Zero, HDC);                  return ScaleX;              }}///<summary>//Get height Scaling percentage///</summary> public static float ScaleY {get {IntPtr hdc = getd                      C (IntPtr.Zero);                      float ScaleY = (float) (float) GetDeviceCaps (hdc, desktopvertres)/(float) getdevicecaps (hdc, vertres);                      ReleaseDC (IntPtr.Zero, HDC);                  return ScaleY;   }} #endregion}}

C # API Get system DPI zoom multiple and resolution size