Fix strike-through support in wxFont with GDI+

Pass down the strike-through flag to GDI+ (see #9907).

Closes #17372.

docs/changes.txt

@@ -209,6 +209,7 @@ wxMSW:
 - Fix crash in wxD2DContext when using non-MSVC compiler (iwbnwif).
 - Notify shell about the changes done by wxMimeTypesManager (Maarten Bent).
 - Fix wxPrintf() and friends when using MinGW with ANSI stdio option.
+- Fix strike-through support in wxFont with GDI+ (David Vanderson).
 
 wxOSX/Cocoa:
 

src/msw/graphics.cpp

@@ -962,6 +962,8 @@ wxGDIPlusFontData::wxGDIPlusFontData( wxGraphicsRenderer* renderer,
         style |= FontStyleItalic;
     if ( font.GetUnderlined() )
         style |= FontStyleUnderline;
+    if ( font.GetStrikethrough() )
+        style |= FontStyleStrikeout;
     if ( font.GetWeight() == wxFONTWEIGHT_BOLD )
         style |= FontStyleBold;