Use Standard System Settings for Multi-Monitor Support

[This is preliminary documentation and subject to change.]

Best Practice   (Designed for Microsoft® Windows® Logo)

Your application should make use of the following system settings to be compatible with multi-monitor support.

Recommended Multi-Monitor System Settings

SM_XVIRTUALSCREEN,           SM_YVIRTUALSCREEN
SM_CXVIRTUALSCREEN,          SM_CYVIRTUALSCREEN
SM_SAMEDISPLAYFORMAT
SM_CMONITORS
 

Remarks

These settings are queried using the GetSystemMetrics function.