MFC ActiveX Not DPI Aware - ActiveX Control created from the MFC template that does use the DPI of the window to determine how to scale its contents.

MFCApplicationDPIAware – MFC App that host 2 ActiveX controls and it’s DDPI Aware

VSTO ExcelAddin1 - VSTO Add-in for Excel. Open using VSTOSharedAddin solution.

VSTO WordAddin1 - VSTO Add-in for Word. Open using VSTOSharedAddin solution.

VSTOSharedAddin - Shared Winform and Windows API calls for VSTO Addins.

Window Based ActiveX – MFC Window based ActiveX that supports DDPI on WM_SIZE event at this moment (tested with App and Office - works fine)

Windowless ActiveX – MFC Windowless ActiveX that supports DDPI on WM_PAINT (it gets HWND of host window from HDC and after it cat get DPI form it, works well in Office and our test App – just requiring that control should be invalidated while WM_DPICHANGE event occurs)