src/ScreenGrab.Sample/MainWindow.xaml.cs

using NHotkey;
using NHotkey.Wpf;
using ScreenGrab.Extensions;
using System.ComponentModel;
using System.Drawing;
using System.Windows;
using System.Windows.Input;
using Wpf.Ui.Tray.Controls;

namespace ScreenGrab.Sample;

public partial class MainWindow
{
    public MainWindow()
    {
        InitializeComponent();
    }

    private void Capture()
    {
        Clean();

        //ScreenGrabber.OnCaptured = bitmap =>
        //{
        //    Img.Source = bitmap.ToImageSource();
        //    if (WindowState != WindowState.Normal)
        //        WindowState = WindowState.Normal;
        //    if (!IsVisible)
        //        Show();
        //    Activate();
        //};
        //ScreenGrabber.Capture(AuxiliaryCb.IsChecked ?? false);

        if (ScreenGrabber.IsCapturing) return;
        // https://github.com/wuqinchao/ScreenCapturer
            // 替代品 
        ScreenGrabber.OnCaptured = async (bitmap, type) => await ScreenshotCallbackAsync(bitmap, type, null);
        ScreenGrabber.Capture(true);
    }

    internal async Task ScreenshotCallbackAsync(Bitmap? bitmap, string type, CancellationToken? token = null)
    {
        if (bitmap == null)
        {
            //ShowBalloonTip("图像不存在");
            return;
        }
    }

    private void Capture(object? sender, HotkeyEventArgs e)
    {
        Capture();
    }

    private void Capture_Click(object sender, RoutedEventArgs e)
    {
        Capture();
    }

    private void Clean_Click(object sender, RoutedEventArgs e)
    {
        Clean();
    }

    private void Clean()
    {
        Img.Source?.Freeze();
        Img.Source = null;
        GC.Collect();
    }

    private void MainWindow_OnLoaded(object sender, RoutedEventArgs e)
    {
        HotkeyManager.Current.AddOrReplace("Capture", Key.A, ModifierKeys.Windows | ModifierKeys.Shift, Capture);
    }

    private void MainWindow_OnUnloaded(object sender, RoutedEventArgs e)
    {
        HotkeyManager.Current.Remove("Capture");
    }

    protected override void OnClosing(CancelEventArgs e)
    {
        e.Cancel = true;
        Hide();
    }

    private void NotifyIcon_OnLeftClick(NotifyIcon sender, RoutedEventArgs e)
    {
        Show();
        Activate();
    }

    private void MenuItem_OnClick(object sender, RoutedEventArgs e)
    {
        Application.Current.Shutdown();
    }
}