gdiplus: Add a trace to GdipDrawString.

dlls/gdiplus/gdiplus.c

@@ -380,3 +380,9 @@ inline void delete_element(region_element* element)
             break;
     }
 }
+
+const char *debugstr_rectf(CONST RectF* rc)
+{
+    if (!rc) return "(null)";
+    return wine_dbg_sprintf("(%0.2f,%0.2f,%0.2f,%0.2f)", rc->X, rc->Y, rc->Width, rc->Height);
+}

dlls/gdiplus/gdiplus_private.h

@@ -69,6 +69,8 @@ static inline REAL deg2rad(REAL degrees)
     return M_PI * degrees / 180.0;
 }
 
+extern const char *debugstr_rectf(CONST RectF* rc);
+
 struct GpPen{
     UINT style;
     GpUnit unit;

dlls/gdiplus/graphics.c

@@ -2016,6 +2016,9 @@ GpStatus WINGDIPAPI GdipDrawString(GpGraphics *graphics, GDIPCONST WCHAR *string
     SIZE size;
     RECT drawcoord;
 
+    TRACE("(%p, %s, %i, %p, %s, %p, %p)\n", graphics, debugstr_wn(string, length),
+        length, font, debugstr_rectf(rect), format, brush);
+
     if(!graphics || !string || !font || !brush || !rect)
         return InvalidParameter;