Added Checkbox to GTK+. Also added a TODO about crashes.

gtkcalls_unix.go

@@ -114,3 +114,11 @@ func gtk_button_set_label(button *gtkWidget, label string) {
 	C.gtk_button_set_label((*C.GtkButton)(unsafe.Pointer(button)),
 		(*C.gchar)(unsafe.Pointer(clabel)))
 }
+
+func gtk_check_button_new() *gtkWidget {
+	return (*gtkWidget)(unsafe.Pointer(C.gtk_check_button_new()))
+}
+
+func gtk_toggle_button_get_active(widget *gtkWidget) bool {
+	return fromgbool(C.gtk_toggle_button_get_active((*C.GtkToggleButton)(unsafe.Pointer(widget))))
+}

sysdata_unix.go

@@ -65,6 +65,8 @@ var classTypes = [nctypes]*classData{
 		},
 	},
 	c_checkbox:	&classData{
+		make:	gtk_check_button_new,
+		setText:	gtk_button_set_label,
 	},
 	c_combobox:	&classData{
 	},
@@ -165,8 +167,12 @@ if classTypes[s.ctype] == nil || classTypes[s.ctype].setText == nil { return nil
 }
 
 func (s *sysData) isChecked() bool {
-	// TODO
+	ret := make(chan bool)
-	return false
+	defer close(ret)
+	uitask <- func() {
+		ret <- gtk_toggle_button_get_active(s.widget)
+	}
+	return <-ret
 }
 
 func (s *sysData) text() string {

todo.md

@@ -28,6 +28,8 @@ super ultra important things:
 	- 64-bit doesn't work, period: it crashes in malloc in wine with heap corruption warnings aplenty during DLL loading; in windows 7 CreateWindowExW complains about an unregistered window class, yet the RegisterClassW appears to have succeeded and examining the stack in WinDbg indicates the correct class name is being sent (see below)
 	- 32-bit: it works now, but if I save the class name converted to UTF-16 beforehand, wine indicates that the class name is replaced with the window title, so something there is wrong...
 - handle in-library panics (internal errors) by reporting them to the user
+- david wendt is telling me he's getting frequent crashes on his end with the GTK+ amd64 build...
+	- I get soft deadlock if I mash the Click Me button repeatedly
 
 important things:
 - maybe make it so sysData doesn't need specialized info on every control type?