how to change the screen identify number?

[arong]

Would you or anyone else know of a way to change the number a certain monitor is assigned by Windows ?

I wanna build a tools to control multi-display, but I meet a problem, I do not know how to get and change the screen number (it can be showed by clicking the “Indentify” button on “display properties->settings” page) by using “WINAPI”

thanks.

[jvanegmond]

Before you try automating this, see if you can change screen number at all. I don't think Windows supports it.

[arong]

Before you try automating this, see if you can change screen number at all. I don't think Windows supports it.

but when i use ATI graphic card, I can change it by using "switch displays" in the right click memu, so i think there is a way to change the screen number in winapi, but I do not know.

[jvanegmond]

If it only works on a ATI graphics card it's not in the windows API. It's in the ATI API (if it even exists).

[martin]

but when i use ATI graphic card, I can change it by using "switch displays" in the right click memu, so i think there is a way to change the screen number in winapi, but I do not know.

The EnumDisplaySettings function return a DEVMODE structure which includes the top left postion on the desktop for the display. Maybe you can change that and pass the modified structure to ChangeDisplaySettingsEx, which also lets you can set if the display is to be the primary display. I don't know but searching for those functions might find something useful.