Function set_fullscreen

native/windows/src/lib.rs:64–102

(fullscreen: bool)

    static mut WINDOWED_RECT: RECT = RECT { left: 0, top: 0, right: 0, bottom: 0 };

    pub fn set_fullscreen(fullscreen: bool) {
        unsafe {
            let Some(hwnd) = HWND_GLOBAL else { return };

            if fullscreen && !IS_FULLSCREEN {
                // Save current style and window rect for restore
                WINDOWED_STYLE = GetWindowLongW(hwnd, GWL_STYLE) as u32;
                let _ = GetWindowRect(hwnd, &mut WINDOWED_RECT);

                // Get monitor dimensions
                let monitor = MonitorFromWindow(hwnd, MONITOR_DEFAULTTONEAREST);
                let mut mi: MONITORINFO = std::mem::zeroed();
                mi.cbSize = std::mem::size_of::<MONITORINFO>() as u32;
                let _ = GetMonitorInfoW(monitor, &mut mi);

                // Set borderless fullscreen
                SetWindowLongW(hwnd, GWL_STYLE, (WS_POPUP | WS_VISIBLE).0 as i32);
                let _ = SetWindowPos(
                    hwnd, HWND_TOP,
                    mi.rcMonitor.left, mi.rcMonitor.top,
                    mi.rcMonitor.right - mi.rcMonitor.left,
                    mi.rcMonitor.bottom - mi.rcMonitor.top,
                    SWP_FRAMECHANGED | SWP_NOOWNERZORDER,
                );
                IS_FULLSCREEN = true;
            } else if !fullscreen && IS_FULLSCREEN {
                // Restore windowed mode
                SetWindowLongW(hwnd, GWL_STYLE, WINDOWED_STYLE as i32);
                let _ = SetWindowPos(
                    hwnd, None,
                    WINDOWED_RECT.left, WINDOWED_RECT.top,
                    WINDOWED_RECT.right - WINDOWED_RECT.left,
                    WINDOWED_RECT.bottom - WINDOWED_RECT.top,
                    SWP_FRAMECHANGED | SWP_NOOWNERZORDER | SWP_NOZORDER,
                );
                IS_FULLSCREEN = false;
            }
        }
    }

    pub fn toggle_fullscreen() {
        unsafe { set_fullscreen(!IS_FULLSCREEN); }