是否有任何选项可以在全屏模式下运行 Flutter Windows 桌面应用程序

Question

我试过颤振 Windows 桌面应用程序，但我无法隐藏标题栏以在全屏模式窗口中运行应用程序

Answer 1

Got the same problem and I'm here to share my solution.

I'm not a Win32 developer but I managed to make a basic fullscreen this way.

This code works for my Flutter version 1.21.0-10.0.pre.114, I hope it will for you too.

My solution is heavily inspired by this one : https://stackoverflow.com/a/2416613/14093885

You have to edit ./windows/runner/main.cpp

Insert the following code between these statements around line 30:

window.SetQuitOnClose(true);

//Insert Code Here

run_loop.Run();

Code to insert :

//HWND is window handler
HWND hwnd = window.GetHandle(); 

auto windowHDC = GetDC(hwnd);
int fullscreenWidth  = GetDeviceCaps(windowHDC, DESKTOPHORZRES);
int fullscreenHeight = GetDeviceCaps(windowHDC, DESKTOPVERTRES);
int colourBits       = GetDeviceCaps(windowHDC, BITSPIXEL);
int refreshRate      = GetDeviceCaps(windowHDC, VREFRESH);

DEVMODE fullscreenSettings;
bool isChangeSuccessful;

EnumDisplaySettings(NULL, 0, &fullscreenSettings);
fullscreenSettings.dmPelsWidth        = fullscreenWidth;
fullscreenSettings.dmPelsHeight       = fullscreenHeight;
fullscreenSettings.dmBitsPerPel       = colourBits;
fullscreenSettings.dmDisplayFrequency = refreshRate;
fullscreenSettings.dmFields           = DM_PELSWIDTH |
                                      DM_PELSHEIGHT |
                                      DM_BITSPERPEL |
                                      DM_DISPLAYFREQUENCY;

SetWindowLongPtr(hwnd, GWL_EXSTYLE, WS_EX_APPWINDOW | WS_EX_TOPMOST);
SetWindowLongPtr(hwnd, GWL_STYLE, WS_POPUP | WS_VISIBLE);
SetWindowPos(hwnd, HWND_TOPMOST, 0, 0, fullscreenWidth, fullscreenHeight, SWP_SHOWWINDOW);
isChangeSuccessful = ChangeDisplaySettings(&fullscreenSettings, CDS_FULLSCREEN) == DISP_CHANGE_SUCCESSFUL;
ShowWindow(hwnd, SW_MAXIMIZE);

EDIT - Flutter 2:

According to @Pavel the last line ShowWindow(hwnd, SW_MAXIMIZE); is not needed in Flutter 2.

Answer 2

I guess window_manager can achieve your needs

Installation

Add this to your package's pubspec.yaml file:

dependencies:
  window_manager:
    git:
      url: https://github.com/leanflutter/window_manager.git
      ref: main

Usage

// Enter fullscreen
await WindowManager.instance.setFullScreen(true);
// Level fullscreen
await WindowManager.instance.setFullScreen(false);

Answer 3

There is no built-in support for full-screen mode yet, so there's no Dart API you can call to enter full screen. If you are familiar with Win32 programming, you could either change the Runner code directly to make the window full screen, or write a plug-in that does it.

Answer 4

You need to implement the plugin window_size: https://github.com/google/flutter-desktop-embedding/tree/master/plugins/window_size

@override initState() {
super.initState();
Future.delayed(Duration.zero).then((finish) async {
  if (Platform.isMacOS) {
    // * FULL SCREEN
    PlatformWindow window = await getWindowInfo();
    setWindowFrame(Rect.fromLTWH(0, 0, window.screen.frame.width, window.screen.frame.height));
  }
});

}

Answer 5

I think it must change the cpp file now.

win32_window.cpp replace "WS_OVERLAPPEDWINDOW" with "WS_POPUP | WS_MAXIMIZE"

/* WS_POPUP : without title bar WS_MAXIMIZE : full screen */

Answer 6

this is the link for more help window Size I have Done this in this way I get window size from here: https://docs.microsoft.com/en-us/windows/win32/winmsg/window-styles

in flutter windows app for window size : go to windows/runner/win32_window.cpp

• for fullscreen window without titlebar WS_POPUP | WS_VISIBLE
• for fullscreen window with titlebar(without any icon such as close,minimize,restore,logo) WS_MAXIMIZE | WS_VISIBLE
• for small or customized window WS_OVERLAPPEDWINDOW | WS_VISIBLE
• for fullscreen window with titlebar WS_OVERLAPPEDWINDOW | WS_MAXIMIZE | WS_VISIBLE

Find this CODE given below in win32_window.cpp file and change as you wish.

HWND window = CreateWindow(
  window_class, title.c_str(), WS_OVERLAPPEDWINDOW | WS_MAXIMIZE | WS_VISIBLE,
  Scale(origin.x, scale_factor), Scale(origin.y, scale_factor),
  Scale(size.width, scale_factor), Scale(size.height, scale_factor),
  nullptr, nullptr, GetModuleHandle(nullptr), this);

Answer 7

Use this package: https://github.com/leanflutter/window_manager

In your main, add this code after 'RunApp':

WidgetsFlutterBinding.ensureInitialized();
// Must add this line.
await windowManager.ensureInitialized();

// Use it only after calling `hiddenWindowAtLaunch`
windowManager.waitUntilReadyToShow().then((_) async {
// Hide window title bar
await windowManager.setTitleBarStyle('hidden');
await windowManager.setFullScreen(true);
await windowManager.center();
await windowManager.show();
await windowManager.setSkipTaskbar(false);
});