multiple-monitors

According to the MSDN documentation for the WindowStartupLocation Property : Setting CenterScreen causes a window to be positioned in the center of the screen that contains the mouse cursor. Although the MSDN doc for the CenterScreen Field itself defines it somewhat less clearly as: The startup location of a window is the center of the screen on which it is opened. A simple test shows this working as it should: MainWindow.xaml <Window x:Class="CenterScreenTest.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

My application uses the WPF MediaElement to play video (MOV files). This works well when playing on the Primary monitor but freezes when the window is moved to the secondary monitor. I have tried the following without success: Starting the application on the secondary monitor Swapping the primary & secondary monitors (problem transfers to the new secondary monitor) When the application window spans both monitors it works correctly but as soon as it is entirely within the secondary monitor the video freezes. Once in this state, moving the application back to the primary monitor doesn't help

Is there a way to specify which monitor a application appears on in Delphi or C++Builder? I am developing a simple program for a customer, which displays kitchen orders on a secondary monitor, generated by a hospitality system. Currently they need to manually drag the window onto the second monitor after it starts. Save the window position before program shutdown and restore them on startup. Multimonitor displays just increase the size of the desktop; other monitor surfaces just have a different section of the same X/Y plane with its origin at the top-left of the primary monitor. This can be

I'm developing a little side-project to display multiple wallpapers on multiple screens under GNOME (something that apparently can't be done by GNOME itself or anything else). I've figured out how to do the main part of it (using the ImageMagick components, for the curious); I'm trying to automate the configuration system. To do that, I need a way to determine the dimensions of the individual screens are. Can anyone give me a hint where to look for that? I presume the X server itself has the information, but I'm not sure how my program can ask for it. It looks like there's a libXinerama API

The presentation display modes are those you see when using the Windows + p shortcut: Computer Only Duplicate Extend Projector Only Do any API calls exist which allow one to switch between these display modes? I want to programmatically switch between monitor and HDMI TV (and do a bunch of other things simultaneously, hence Windows + p not being useful), but I'm hitting a brick wall. In case the EnumDisplaySettingsEx and ChangeDisplaySettingsEx functions do not work for you, you can also use this: private void SetDisplayMode(DisplayMode mode) { var proc = new Process(); proc.StartInfo.FileName