display-directx : DirectX (WIN32)
display-directx: [ [-inwin=<winid>] [-keepcursor] [-nocursor] [-noinput] [-physz==<sizex>,<sizey>[dpi]] ]
Used for Win32 DirectX port of libGGI.
Run in already-existing window with id winid. This can be used to embed a LibGGI application into a DirectX application. The value should be a DirectX window ID expressed as a decimal, hexadecimal or octal number in C syntax. The special string "root" will cause the application to run in the root window. Note that in the root window, you may need to explictly select a LibGII input source using the GGI_INPUT environment variable as Windows will absorb all events sent to the window. When using the root window other features (like direct framebuffer access and video hardware mode selection) may be available which are not available when the application is running in a normal window.
This option will override the physical screen size reported by the DirectX, which affects applications which wish to remain resolution independent. sizex,:p:sizey are the x,y size of the entire screen (not just the DirectX window containing the visual) in millimeters, unless the optional dpi string is affixed, in which case, they represent resolution in dots-per-inch. Yes, there are two equals signs there, for reasons of compatibility with other targets.