> On my Linux + KDE system however icons of the IDE's main menuitems
do not scale.
> In KDE settings panel -> Fonts I set the "Force font's DPI" value to
144 which is about 150%.
I remember I worked on it:
1.) Gtk2: I added support for Gtk2. See screenshot. It works well for me
if I use "xrandr --dpi 144x144" as it is suggested in
http://wiki.lazarus.freepascal.org/High_DPI
Your settings revealed a bug in Gtk2 bindings. Patch is attached.
2.) Qt: I wasn't able to add support of high-resolution icons in menus
under Qt. My conclusion was that either Qt itself or LCL-Qt bindings do
not support big icons in menus. When I used the correct size icon in the
menu it was always (badly) downscaled to 16x16 pixels.
Greetings
Ondrej
Index: lcl/interfaces/gtk2/gtk2winapi.inc
===================================================================
--- lcl/interfaces/gtk2/gtk2winapi.inc (revision 59319)
+++ lcl/interfaces/gtk2/gtk2winapi.inc (working copy)
@@ -4723,10 +4723,10 @@
//we will also have to add internal support for Papersizes etc..
LOGPIXELSX : { Logical pixels per inch in X }
- Result := RoundToInt(gdk_screen_width / (GetScreenWidthMM / 25.4));
+ Result := ScreenInfo.PixelsPerInchX;
LOGPIXELSY : { Logical pixels per inch in Y }
- Result := RoundToInt(gdk_screen_height / (GetScreenHeightMM / 25.4));
+ Result := ScreenInfo.PixelsPerInchY;
SIZEPALETTE: { number of entries in color palette }
if GetVisual then
--
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