Fix the size of the font returned by wxTextCtrl::GetStyle() in MSW.

CHARFORMAT stores height in 1/20th of a point, not pixels. Add the correct
conversion to the units used by LOGFONT.

See #13384.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@70122 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/textctrl.cpp

@@ -2740,7 +2740,10 @@ bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
 
 
     LOGFONT lf;
-    lf.lfHeight = cf.yHeight;
+    // Convert the height from the units of 1/20th of the point in which
+    // CHARFORMAT stores it to pixel-based units used by LOGFONT.
+    const wxCoord ppi = wxClientDC(this).GetPPI().y;
+    lf.lfHeight = -MulDiv(cf.yHeight/2, ppi, 72);
     lf.lfWidth = 0;
     lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
     lf.lfClipPrecision = 0;