I have the following function in my WPF application that I use to resize a window to the primary screen's working area (the whole screen minus the taskbar):
private void Window_Loaded(object sender, RoutedEventArgs e)
{
int theHeight = System.Windows.Forms.Screen.PrimaryScreen.WorkingArea.Height;
int theWidth = System.Windows.Forms.Screen.PrimaryScreen.WorkingArea.Width;
this.MaxHeight = theHeight;
this.MinHeight = theHeight;
this.MaxWidth = theWidth;
this.MinWidth = theWidth;
this.Height = theHeight;
this.Width = theWidth;
this.Top = 0;
this.Left = 0;
}
This works very well, as long as the machine's DPI is set at 100%. However, if they have the DPI set higher, then this doesn't work, and the window spills off the screen. I realize that this is because WPF pixels aren't the same as "real" screen pixels, and because I'm using a WinForms property to get the screen dimensions.
I don't know of an WPF equivalent to Screen.PrimaryScreen.WorkingArea. Is there something I can use for this that would work regardless of DPI setting?
If not, then I guess I need to some sort of scaling, but I'm not sure how to determine how much to scale by.
How can I modify my function to account for different DPI settings?
By the way, in case you're wondering why I need to use this function instead of just maximizing the window, it's because it's a borderless window (WindowStyle="None"), and if you maximize this type of window, it covers the taskbar.
You get the transformed work area size from the SystemParameters.WorkArea
property:
Top = 0;
Left = 0;
Width = System.Windows.SystemParameters.WorkArea.Width;
Height = System.Windows.SystemParameters.WorkArea.Height;
In WPF, you can use the SystemParameters.PrimaryScreenWidth
and SystemParameters.PrimaryScreenHeight
properties to find out the primary screen dimensions:
double width = SystemParameters.PrimaryScreenWidth;
double height = SystemParameters.PrimaryScreenHeight;
If you wanna get the dimensions of both Screens you simply can use:
var primaryScreen =
System.Windows.Forms
.Screen
.AllScreens
.Where(s => s.Primary)
.FirstOrDefault();
var secondaryScreen =
System.Windows.Forms
.Screen
.AllScreens
.Where(s => !s.Primary)
.FirstOrDefault();
After this you can reach Width, Height etc. by using
primaryScreen.Bounds.Width
So Long ;)
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