Change origin? Win32?

Question

is it possible to move the origin on the display from top left to the centre of the display?

Why I want to do this? So that, I can plot points such as:

(-21,-25),(22,-25),(21,25),(-21,25)

As you can see that some of these are negative and hence not visible on the display. Any suggestions?

Answer 1

Use the GDI function SetViewportOrgEx(). Note that in GDI, the coordinates are not relative to the screen; they're relative to the device context, which typically corresponds to your window's client area.