WixStandardBootstrapperApplication - Theme Window size differences between v3 and v5

[joeloff]

Question

The window created for a v3 and v5 theme with the same Width/Height appear slightly larger in v5.

I started comparing thmutil.cpp between v5 and v3 and noticed that in v5, there's an additional call to DpiuAdjustWindowRect. I also noticed that the ThmUtil docs mentions that the Window@Width is the client area width (compared to v3 docs that stated it was the Window width).

The difference seems too small to be DPI related I think. I assume this is related to the Window@HexStyle that's now being accounted for to adjust the window rectangle to provide the desired dimensions for the client rectangle. My style is set to 0x100a0000 (WS_VISIBLE | WS_SYSMENU | WS_MINIMIZEBOX)

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