How can I get the active screen dimensions

Question

What I am looking for is the equivalent of System Windows SystemParameters WorkArea for the monitor that the window is currently on   Clarification   The window in question is WPF  not WinForm

User · Answer

I wanted to have the screen resolution before opening the first of my windows  so here a quick solution to open an invisible window before actually measuring screen dimensions  you need to adapt the window parameters to your window in order to ensure that both are openend on the same screen - mainly the WindowStartupLocation is important   Window w   new Window    w ResizeMode   ResizeMode NoResize  w WindowState   WindowState Normal  w WindowStyle   WindowStyle None  w Background   Brushes Transparent  w Width   0  w Height   0  w AllowsTransparency   true  w IsHitTestVisible   false  w WindowStartupLocation   WindowStartupLocation Manual  w Show    Screen scr   Screen FromHandle new WindowInteropHelper w  Handle   w Close

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in C  winforms I have got start point  for case when we have several monitor diplay and one form is calling another one  with help of the following method   private Point get start point                 return             new Point Screen GetBounds parent class with form ActiveForm  X                        Screen GetBounds parent class with form ActiveForm  Y

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Beware of the scale factor of your windows  100    125    150    200    You can get the real screen size by using the following code   SystemParameters FullPrimaryScreenHeight SystemParameters FullPrimaryScreenWidth

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Also you may need    SystemParameters VirtualScreenWidth SystemParameters VirtualScreenHeight   to get the combined size of all monitors and not one in particular

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Adding a solution that doesn t use WinForms but NativeMethods instead  First you need to define the native methods needed   public static class NativeMethods       public const Int32 MONITOR DEFAULTTOPRIMERTY   0x00000001      public const Int32 MONITOR DEFAULTTONEAREST   0x00000002         DllImport   user32 dll         public static extern IntPtr MonitorFromWindow  IntPtr handle  Int32 flags           DllImport   user32 dll         public static extern Boolean GetMonitorInfo  IntPtr hMonitor  NativeMonitorInfo lpmi           Serializable  StructLayout  LayoutKind Sequential        public struct NativeRectangle               public Int32 Left          public Int32 Top          public Int32 Right          public Int32 Bottom            public NativeRectangle  Int32 left  Int32 top  Int32 right  Int32 bottom                         this Left   left              this Top   top              this Right   right              this Bottom   bottom                         StructLayout  LayoutKind Sequential  CharSet   CharSet Auto        public sealed class NativeMonitorInfo               public Int32 Size   Marshal SizeOf  typeof  NativeMonitorInfo              public NativeRectangle Monitor          public NativeRectangle Work          public Int32 Flags            And then get the monitor handle and the monitor info like this           var hwnd   new WindowInteropHelper  this   EnsureHandle            var monitor   NativeMethods MonitorFromWindow  hwnd  NativeMethods MONITOR DEFAULTTONEAREST             if   monitor    IntPtr Zero                         var monitorInfo   new NativeMonitorInfo                NativeMethods GetMonitorInfo  monitor  monitorInfo                 var left   monitorInfo Monitor Left              var top   monitorInfo Monitor Top              var width     monitorInfo Monitor Right - monitorInfo Monitor Left                var height     monitorInfo Monitor Bottom - monitorInfo Monitor Top

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Adding a solution that doesn t use WinForms but NativeMethods instead  First you need to define the native methods needed   public static class NativeMethods       public const Int32 MONITOR DEFAULTTOPRIMERTY   0x00000001      public const Int32 MONITOR DEFAULTTONEAREST   0x00000002         DllImport   user32 dll         public static extern IntPtr MonitorFromWindow  IntPtr handle  Int32 flags           DllImport   user32 dll         public static extern Boolean GetMonitorInfo  IntPtr hMonitor  NativeMonitorInfo lpmi           Serializable  StructLayout  LayoutKind Sequential        public struct NativeRectangle               public Int32 Left          public Int32 Top          public Int32 Right          public Int32 Bottom            public NativeRectangle  Int32 left  Int32 top  Int32 right  Int32 bottom                         this Left   left              this Top   top              this Right   right              this Bottom   bottom                         StructLayout  LayoutKind Sequential  CharSet   CharSet Auto        public sealed class NativeMonitorInfo               public Int32 Size   Marshal SizeOf  typeof  NativeMonitorInfo              public NativeRectangle Monitor          public NativeRectangle Work          public Int32 Flags            And then get the monitor handle and the monitor info like this           var hwnd   new WindowInteropHelper  this   EnsureHandle            var monitor   NativeMethods MonitorFromWindow  hwnd  NativeMethods MONITOR DEFAULTTONEAREST             if   monitor    IntPtr Zero                         var monitorInfo   new NativeMonitorInfo                NativeMethods GetMonitorInfo  monitor  monitorInfo                 var left   monitorInfo Monitor Left              var top   monitorInfo Monitor Top              var width     monitorInfo Monitor Right - monitorInfo Monitor Left                var height     monitorInfo Monitor Bottom - monitorInfo Monitor Top

User · Answer

Screen FromControl  Screen FromPoint and Screen FromRectangle should help you with this  For example in WinForms it would be   class MyForm   Form     public Rectangle GetScreen           return Screen FromControl this  Bounds          I don t know of an equivalent call for WPF  Therefore  you need to do something like this extension method   static class ExtensionsForWPF     public static System Windows Forms Screen GetScreen this Window window          return System Windows Forms Screen FromHandle new WindowInteropHelper window  Handle

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This is a  Center Screen DotNet 4 5 solution   using SystemParameters instead of System Windows Forms or My Compuer Screen  Since Windows 8 has changed the screen dimension calculation  the only way it works for me looks like that  Taskbar calculation included    Private Sub Window Loaded ByVal sender As System Object  ByVal e As System Windows RoutedEventArgs  Handles MyBase Loaded     Dim BarWidth As Double   SystemParameters VirtualScreenWidth - SystemParameters WorkArea Width     Dim BarHeight As Double   SystemParameters VirtualScreenHeight - SystemParameters WorkArea Height     Me Left    SystemParameters VirtualScreenWidth - Me ActualWidth - BarWidth    2     Me Top    SystemParameters VirtualScreenHeight - Me ActualHeight - BarHeight    2          End Sub

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WinForms For multi-monitor setups you will also need account for the X and Y position  Rectangle activeScreenDimensions   Screen FromControl this  Bounds  this Size   new Size activeScreenDimensions Width   activeScreenDimensions X  activeScreenDimensions Height   activeScreenDimensions Y

User · Answer

Add on to ffpf  Screen FromControl this  Bounds

User · Answer

Beware of the scale factor of your windows  100    125    150    200    You can get the real screen size by using the following code   SystemParameters FullPrimaryScreenHeight SystemParameters FullPrimaryScreenWidth

User · Answer

Screen FromControl  Screen FromPoint and Screen FromRectangle should help you with this  For example in WinForms it would be   class MyForm   Form     public Rectangle GetScreen           return Screen FromControl this  Bounds          I don t know of an equivalent call for WPF  Therefore  you need to do something like this extension method   static class ExtensionsForWPF     public static System Windows Forms Screen GetScreen this Window window          return System Windows Forms Screen FromHandle new WindowInteropHelper window  Handle

User · Answer

This debugging code should do the trick well  You can explore the properties of the Screen Class Put all displays in an array or list using Screen AllScreens then capture the index of the current display and its properties   C   Converted from VB by Telerik - Please double check                List lt Screen gt  arrAvailableDisplays   new List lt Screen gt         List lt string gt  arrDisplayNames   new List lt string gt          foreach  Screen Display in Screen AllScreens                arrAvailableDisplays Add Display           arrDisplayNames Add Display DeviceName              Screen scrCurrentDisplayInfo   Screen FromControl this       string strDeviceName   Screen FromControl this  DeviceName      int idxDevice   arrDisplayNames IndexOf strDeviceName        MessageBox Show this   quot Number of Displays Found   quot    arrAvailableDisplays Count ToString     Constants vbCrLf    quot ID   quot    idxDevice ToString     Constants vbCrLf    quot Device Name   quot    scrCurrentDisplayInfo DeviceName ToString   Constants vbCrLf    quot Primary   quot    scrCurrentDisplayInfo Primary ToString   Constants vbCrLf    quot Bounds   quot    scrCurrentDisplayInfo Bounds ToString   Constants vbCrLf    quot Working Area   quot    scrCurrentDisplayInfo WorkingArea ToString   Constants vbCrLf    quot Bits per Pixel   quot    scrCurrentDisplayInfo BitsPerPixel ToString   Constants vbCrLf    quot Width   quot    scrCurrentDisplayInfo Bounds Width ToString   Constants vbCrLf    quot Height   quot    scrCurrentDisplayInfo Bounds Height ToString   Constants vbCrLf    quot Work Area Width   quot    scrCurrentDisplayInfo WorkingArea Width ToString   Constants vbCrLf    quot Work Area Height   quot    scrCurrentDisplayInfo WorkingArea Height ToString   quot Current Info for Display   quot    scrCurrentDisplayInfo DeviceName ToString    quot   - ID   quot    idxDevice ToString    MessageBoxButtons OK  MessageBoxIcon Information      VB  Original code   Dim arrAvailableDisplays As New List Of Screen        Dim arrDisplayNames As New List Of String         For Each Display As Screen In Screen AllScreens         arrAvailableDisplays Add Display          arrDisplayNames Add Display DeviceName      Next      Dim scrCurrentDisplayInfo As Screen   Screen FromControl Me      Dim strDeviceName As String   Screen FromControl Me  DeviceName     Dim idxDevice As Integer   arrDisplayNames IndexOf strDeviceName       MessageBox Show Me                       quot Number of Displays Found   quot    arrAvailableDisplays Count ToString  amp  vbCrLf  amp                       quot ID   quot   amp  idxDevice ToString   vbCrLf  amp                       quot Device Name   quot   amp  scrCurrentDisplayInfo DeviceName ToString   vbCrLf  amp                       quot Primary   quot   amp  scrCurrentDisplayInfo Primary ToString   vbCrLf  amp                       quot Bounds   quot   amp  scrCurrentDisplayInfo Bounds ToString   vbCrLf  amp                       quot Working Area   quot   amp  scrCurrentDisplayInfo WorkingArea ToString   vbCrLf  amp                       quot Bits per Pixel   quot   amp  scrCurrentDisplayInfo BitsPerPixel ToString   vbCrLf  amp                       quot Width   quot   amp  scrCurrentDisplayInfo Bounds Width ToString   vbCrLf  amp                       quot Height   quot   amp  scrCurrentDisplayInfo Bounds Height ToString   vbCrLf  amp                       quot Work Area Width   quot   amp  scrCurrentDisplayInfo WorkingArea Width ToString   vbCrLf  amp                       quot Work Area Height   quot   amp  scrCurrentDisplayInfo WorkingArea Height ToString                       quot Current Info for Display   quot   amp  scrCurrentDisplayInfo DeviceName ToString  amp   quot   - ID   quot   amp  idxDevice ToString  MessageBoxButtons OK  MessageBoxIcon Information

User · Answer

in C  winforms I have got start point  for case when we have several monitor diplay and one form is calling another one  with help of the following method   private Point get start point                 return             new Point Screen GetBounds parent class with form ActiveForm  X                        Screen GetBounds parent class with form ActiveForm  Y

User · Answer

Screen FromControl  Screen FromPoint and Screen FromRectangle should help you with this  For example in WinForms it would be   class MyForm   Form     public Rectangle GetScreen           return Screen FromControl this  Bounds          I don t know of an equivalent call for WPF  Therefore  you need to do something like this extension method   static class ExtensionsForWPF     public static System Windows Forms Screen GetScreen this Window window          return System Windows Forms Screen FromHandle new WindowInteropHelper window  Handle

User · Answer

Also you may need    SystemParameters VirtualScreenWidth SystemParameters VirtualScreenHeight   to get the combined size of all monitors and not one in particular

User · Answer

I needed to set the maximum size of my window application  This one could changed accordingly the application is is been showed in the primary screen or in the secondary  To overcome this problem e created a simple method that i show you next        lt summary gt      Set the max size of the application window taking into account the current monitor      lt  summary gt  public static void SetMaxSizeWindow ioConnect  receiver        Point absoluteScreenPos    receiver PointToScreen Mouse GetPosition  receiver         if  System Windows SystemParameters VirtualScreenLeft    System Windows SystemParameters WorkArea Left                  Primary Monitor is on the Left         if  absoluteScreenPos X  lt   System Windows SystemParameters PrimaryScreenWidth                          Primary monitor              receiver WindowApplication MaxWidth   System Windows SystemParameters WorkArea Width               receiver WindowApplication MaxHeight   System Windows SystemParameters WorkArea Height                    else                         Secondary monitor              receiver WindowApplication MaxWidth   System Windows SystemParameters VirtualScreenWidth - System Windows SystemParameters WorkArea Width               receiver WindowApplication MaxHeight   System Windows SystemParameters VirtualScreenHeight                       if  System Windows SystemParameters VirtualScreenLeft  lt  0                  Primary Monitor is on the Right         if  absoluteScreenPos X  gt  0                          Primary monitor              receiver WindowApplication MaxWidth   System Windows SystemParameters WorkArea Width               receiver WindowApplication MaxHeight   System Windows SystemParameters WorkArea Height                    else                         Secondary monitor              receiver WindowApplication MaxWidth   System Windows SystemParameters VirtualScreenWidth - System Windows SystemParameters WorkArea Width               receiver WindowApplication MaxHeight   System Windows SystemParameters VirtualScreenHeight

User · Answer

This debugging code should do the trick well  You can explore the properties of the Screen Class Put all displays in an array or list using Screen AllScreens then capture the index of the current display and its properties   C   Converted from VB by Telerik - Please double check                List lt Screen gt  arrAvailableDisplays   new List lt Screen gt         List lt string gt  arrDisplayNames   new List lt string gt          foreach  Screen Display in Screen AllScreens                arrAvailableDisplays Add Display           arrDisplayNames Add Display DeviceName              Screen scrCurrentDisplayInfo   Screen FromControl this       string strDeviceName   Screen FromControl this  DeviceName      int idxDevice   arrDisplayNames IndexOf strDeviceName        MessageBox Show this   quot Number of Displays Found   quot    arrAvailableDisplays Count ToString     Constants vbCrLf    quot ID   quot    idxDevice ToString     Constants vbCrLf    quot Device Name   quot    scrCurrentDisplayInfo DeviceName ToString   Constants vbCrLf    quot Primary   quot    scrCurrentDisplayInfo Primary ToString   Constants vbCrLf    quot Bounds   quot    scrCurrentDisplayInfo Bounds ToString   Constants vbCrLf    quot Working Area   quot    scrCurrentDisplayInfo WorkingArea ToString   Constants vbCrLf    quot Bits per Pixel   quot    scrCurrentDisplayInfo BitsPerPixel ToString   Constants vbCrLf    quot Width   quot    scrCurrentDisplayInfo Bounds Width ToString   Constants vbCrLf    quot Height   quot    scrCurrentDisplayInfo Bounds Height ToString   Constants vbCrLf    quot Work Area Width   quot    scrCurrentDisplayInfo WorkingArea Width ToString   Constants vbCrLf    quot Work Area Height   quot    scrCurrentDisplayInfo WorkingArea Height ToString   quot Current Info for Display   quot    scrCurrentDisplayInfo DeviceName ToString    quot   - ID   quot    idxDevice ToString    MessageBoxButtons OK  MessageBoxIcon Information      VB  Original code   Dim arrAvailableDisplays As New List Of Screen        Dim arrDisplayNames As New List Of String         For Each Display As Screen In Screen AllScreens         arrAvailableDisplays Add Display          arrDisplayNames Add Display DeviceName      Next      Dim scrCurrentDisplayInfo As Screen   Screen FromControl Me      Dim strDeviceName As String   Screen FromControl Me  DeviceName     Dim idxDevice As Integer   arrDisplayNames IndexOf strDeviceName       MessageBox Show Me                       quot Number of Displays Found   quot    arrAvailableDisplays Count ToString  amp  vbCrLf  amp                       quot ID   quot   amp  idxDevice ToString   vbCrLf  amp                       quot Device Name   quot   amp  scrCurrentDisplayInfo DeviceName ToString   vbCrLf  amp                       quot Primary   quot   amp  scrCurrentDisplayInfo Primary ToString   vbCrLf  amp                       quot Bounds   quot   amp  scrCurrentDisplayInfo Bounds ToString   vbCrLf  amp                       quot Working Area   quot   amp  scrCurrentDisplayInfo WorkingArea ToString   vbCrLf  amp                       quot Bits per Pixel   quot   amp  scrCurrentDisplayInfo BitsPerPixel ToString   vbCrLf  amp                       quot Width   quot   amp  scrCurrentDisplayInfo Bounds Width ToString   vbCrLf  amp                       quot Height   quot   amp  scrCurrentDisplayInfo Bounds Height ToString   vbCrLf  amp                       quot Work Area Width   quot   amp  scrCurrentDisplayInfo WorkingArea Width ToString   vbCrLf  amp                       quot Work Area Height   quot   amp  scrCurrentDisplayInfo WorkingArea Height ToString                       quot Current Info for Display   quot   amp  scrCurrentDisplayInfo DeviceName ToString  amp   quot   - ID   quot   amp  idxDevice ToString  MessageBoxButtons OK  MessageBoxIcon Information

User · Answer

I needed to set the maximum size of my window application  This one could changed accordingly the application is is been showed in the primary screen or in the secondary  To overcome this problem e created a simple method that i show you next        lt summary gt      Set the max size of the application window taking into account the current monitor      lt  summary gt  public static void SetMaxSizeWindow ioConnect  receiver        Point absoluteScreenPos    receiver PointToScreen Mouse GetPosition  receiver         if  System Windows SystemParameters VirtualScreenLeft    System Windows SystemParameters WorkArea Left                  Primary Monitor is on the Left         if  absoluteScreenPos X  lt   System Windows SystemParameters PrimaryScreenWidth                          Primary monitor              receiver WindowApplication MaxWidth   System Windows SystemParameters WorkArea Width               receiver WindowApplication MaxHeight   System Windows SystemParameters WorkArea Height                    else                         Secondary monitor              receiver WindowApplication MaxWidth   System Windows SystemParameters VirtualScreenWidth - System Windows SystemParameters WorkArea Width               receiver WindowApplication MaxHeight   System Windows SystemParameters VirtualScreenHeight                       if  System Windows SystemParameters VirtualScreenLeft  lt  0                  Primary Monitor is on the Right         if  absoluteScreenPos X  gt  0                          Primary monitor              receiver WindowApplication MaxWidth   System Windows SystemParameters WorkArea Width               receiver WindowApplication MaxHeight   System Windows SystemParameters WorkArea Height                    else                         Secondary monitor              receiver WindowApplication MaxWidth   System Windows SystemParameters VirtualScreenWidth - System Windows SystemParameters WorkArea Width               receiver WindowApplication MaxHeight   System Windows SystemParameters VirtualScreenHeight

User · Answer

Add on to ffpf  Screen FromControl this  Bounds

User · Answer

Add on to ffpf  Screen FromControl this  Bounds

User · Answer

You can use this to get desktop workspace bounds of the primary screen   System Windows SystemParameters WorkArea  This is also useful for getting just the size of the primary screen   System Windows SystemParameters PrimaryScreenWidth System Windows SystemParameters PrimaryScreenHeight

User · Answer

Screen FromControl  Screen FromPoint and Screen FromRectangle should help you with this  For example in WinForms it would be   class MyForm   Form     public Rectangle GetScreen           return Screen FromControl this  Bounds          I don t know of an equivalent call for WPF  Therefore  you need to do something like this extension method   static class ExtensionsForWPF     public static System Windows Forms Screen GetScreen this Window window          return System Windows Forms Screen FromHandle new WindowInteropHelper window  Handle

User · Answer

You can use this to get desktop workspace bounds of the primary screen   System Windows SystemParameters WorkArea  This is also useful for getting just the size of the primary screen   System Windows SystemParameters PrimaryScreenWidth System Windows SystemParameters PrimaryScreenHeight

User · Answer

This is a  Center Screen DotNet 4 5 solution   using SystemParameters instead of System Windows Forms or My Compuer Screen  Since Windows 8 has changed the screen dimension calculation  the only way it works for me looks like that  Taskbar calculation included    Private Sub Window Loaded ByVal sender As System Object  ByVal e As System Windows RoutedEventArgs  Handles MyBase Loaded     Dim BarWidth As Double   SystemParameters VirtualScreenWidth - SystemParameters WorkArea Width     Dim BarHeight As Double   SystemParameters VirtualScreenHeight - SystemParameters WorkArea Height     Me Left    SystemParameters VirtualScreenWidth - Me ActualWidth - BarWidth    2     Me Top    SystemParameters VirtualScreenHeight - Me ActualHeight - BarHeight    2          End Sub

User · Answer

WinForms For multi-monitor setups you will also need account for the X and Y position  Rectangle activeScreenDimensions   Screen FromControl this  Bounds  this Size   new Size activeScreenDimensions Width   activeScreenDimensions X  activeScreenDimensions Height   activeScreenDimensions Y

User · Answer

I wanted to have the screen resolution before opening the first of my windows  so here a quick solution to open an invisible window before actually measuring screen dimensions  you need to adapt the window parameters to your window in order to ensure that both are openend on the same screen - mainly the WindowStartupLocation is important   Window w   new Window    w ResizeMode   ResizeMode NoResize  w WindowState   WindowState Normal  w WindowStyle   WindowStyle None  w Background   Brushes Transparent  w Width   0  w Height   0  w AllowsTransparency   true  w IsHitTestVisible   false  w WindowStartupLocation   WindowStartupLocation Manual  w Show    Screen scr   Screen FromHandle new WindowInteropHelper w  Handle   w Close

User · Answer

Add on to ffpf  Screen FromControl this  Bounds

[c#] How can I get the active screen dimensions?

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