The PHT_SCREEN_RESOLUTION handle is used to modify the list of screen resolutions available in a virtual machine. By default, only the most common resolutions are supported in a virtual machine. Using this handle, you can add additional resolutions and modify the existing ones if needed. The handle is obtained using the PrlVm_CreateScrRes or the PrlVm_GetScrRes function. The additional screen resolution support can be enabled or disabled in a virtual machine. To determine the status of the feature, use the PrlVmCfg_IsScrResEnabled function.