氧化钙

> What actually "doesn't work", clearly from your screenshot the plugin runs? Did you try something debuggerish, like setting a breakpoint and running the program to see if it stops?...

> I don't use the debugger plugin, but I'd guess that the buttons are not available because the debugger isn't running, try the lower right button. Yeah, that was my...

> It's possible those icons are like that because your icon theme doesn't have the icons the Debugger plugin uses. You might try changing icon themes to some robust one...

Sorry guys, I forgot to put the error message which popup when I try to "run" debug: 

> @JustinCao86 just to confirm, do you have GDB installed? If so, maybe try putting `gdb` in that "Debugger" text box? of course:  and that text box is a...

> Just because it is in your path in a terminal doesn't mean its in the path inherited by Geany. If started from menus it may not read the same...