MSDN Device Context Functions What you basically need to do: Use the EnumDisplayDevices() API call to enumerate the display devices on the system and look for those that don’t have the DISPLAY_DEVICE_ATTACHED_TO_DESKTOP flag set (this will include any mirroring devices so not all will be physical displays.) Once you’ve found the display device you’ll need … Read more
Unless the application you’re launching has a command-line switch for it, there’s no easy way to specify on which monitor to display a window. As far as I’m aware, neither start nor notepad supports such a switch. The closest solution I’ve found is to move a window after it’s already open. Edit: user32.dll SetWindowPos() invoked … Read more
You can’t specify the monitor, but you can specify the position of the popup window as being relative to the where the click caused the window to popup. Use the getMouseXY() function to get values to pass as the left and top args to the window.open() method. (the left and top args only work with … Read more
You need to use the Screen class to find a screen that the original form is not on, then set the second form’s Location property based on that screen’s Bounds. For example: var myScreen = Screen.FromControl(originalForm); var otherScreen = Screen.AllScreens.FirstOrDefault(s => !s.Equals(myScreen)) ?? myScreen; otherForm.Left = otherScreen.WorkingArea.Left + 120; otherForm.Top = otherScreen.WorkingArea.Top + 120; This … Read more
Extension method to Maximize a window to the secondary monitor (if there is one). Doesn’t assume that the secondary monitor is System.Windows.Forms.Screen.AllScreens[2]; using System.Linq; using System.Windows; namespace ExtendedControls { static public class WindowExt { // NB : Best to call this function from the windows Loaded event or after showing the window // (otherwise window … Read more
Try this code. Points of interest: Checks if the window is (partially) visible on any screen’s working area. E.g. dragging it behind the task bar or moving it completely offscreen resets the position to windows default. Saves the correct bounds even if the Form is minimized or maximized (common error) Saves the WindowState correctly. Saving … Read more
i tried GetDesktopWindow() function but it doesn’t work properly. Of course not. The GetDesktopWindow function returns a handle to the desktop window. It doesn’t have anything to do with capturing an image of that window. Besides, the desktop window is not the same thing as “the entire screen”. It refers specifically to the desktop window. … Read more
You can use EnumDisplayDevices to figure out what displays you have available and EnumDisplaySettings to get a list of available resolutions for your displays. Use ChangeDisplaySettings to set the resolution you need.
Result of “window.open dual-screen” search revealed this fancy nugget: Dual Monitors and Window.open “When the user clicks on a link that opens a new window using window.open. Make the window appear on the same monitor as its’ parent.” // Find Left Boundry of the Screen/Monitor function FindLeftScreenBoundry() { // Check if the window is off … Read more
Examine carefully! this is what you looking for, you can now write Screen.PrimaryScreen.DeviceFriendlyName() and get the real name of the monitor device. (and yes, it is the same name seen in resolution dialog) While I did add some personal touch to wrap this code I did not create the Hard-Core part of it, And so … Read more