Improved examples to have more respectable memory management

Author: Sylphrena

examples/widget-template-manual/window.odin

@@ -87,7 +87,10 @@ my_box_get_type :: proc "c" () -> (g_type: gobj.Type) {
         context = runtime.default_context()
         fmt.printfln("Button clicked %d times!", my_box.button_clicked)
 
-        button_clicked_cstring := fmt.ctprintf("Clicked %d times!", my_box.button_clicked)
+        // GTK copies our string, so we are responsible for freeing the memory.
+        button_clicked_cstring := fmt.caprintf("Clicked %d times!", my_box.button_clicked)
+        defer delete(button_clicked_cstring)
+
         gtk.button_set_label(button, button_clicked_cstring)
     }
 }

examples/widget-template-with-helper/window.odin

@@ -132,9 +132,10 @@ my_button_clicked :: proc "c"(button: ^gtk.Button, data: glib.pointer) {
     context = runtime.default_context()
     fmt.printfln("Button clicked %d times!", my_box.button_clicked)
 
-    button_clicked_cstring := fmt.ctprintf("Clicked %d times!", my_box.button_clicked)
+    button_clicked_cstring := fmt.caprintf("Clicked %d times!", my_box.button_clicked)
 
     // We set the property of our box, and tell GTK that it changed, which will automatically update everything that depends on it.
+    delete(my_box.button_label)
     my_box.button_label = button_clicked_cstring
     gobj.object_notify(cast(^gobj.Object)my_box, "button-label")
 

gtk/template_helper.odin

@@ -58,7 +58,8 @@ register_type :: proc(
         instance_init = instance_init_proc,
     }
 
-    my_type_name := fmt.ctprint(typeid_of(instance_type))
+    my_type_name := fmt.caprint(typeid_of(instance_type))
+    defer delete(my_type_name)
     registered_g_type := gobj.type_register_static(parent_g_type, my_type_name, &info, .NONE)
 
     static_g_type_ptr^ = registered_g_type
@@ -105,7 +106,9 @@ register_type_with_template :: proc(
         instance_init = instance_init_proc,
     }
 
-    my_type_name := fmt.ctprint(typeid_of(instance_type))
+    my_type_name := fmt.caprint(typeid_of(instance_type))
+    defer delete(my_type_name)
+
     registered_g_type := gobj.type_register_static(parent_g_type, my_type_name, &info, .NONE)
 
     static_g_type_ptr^ = registered_g_type
@@ -192,7 +195,9 @@ class_init_default_template :: proc "c" (class: glib.pointer, data: glib.pointer
 
     create_param_spec :: proc(type: typeid, tag: string) -> (param_spec: ^gobj.ParamSpec, ok: bool) {
         ok = true
-        name := fmt.ctprint(tag)
+        name := fmt.caprint(tag)
+        defer delete(name)
+
         switch type {
         case string:
             param_spec = gobj.param_spec_string(