unsafe extern "C++" {
include!("src/cpp/qt_widget.h");
// --- QGridLayout ---
unsafe fn QGridLayout_new(parent: *mut QWidget) -> *mut QGridLayout;
unsafe fn QGridLayout_addWidget(
layout: *mut QGridLayout,
widget: *mut QWidget,
row: i32,
col: i32,
rowSpan: i32,
colSpan: i32,
);
unsafe fn QGridLayout_delete(layout: *mut QGridLayout);
}