JiLinApp/JiLinApp/Components/CameraRealPlay.xaml.cs

using EC.Util.CameraSDK;
using System;
using System.Runtime.InteropServices;
using System.Windows;
using System.Windows.Interop;

namespace JiLinApp.Components;

/// <summary>
/// CameraRealPlay.xaml 的交互逻辑
/// </summary>
public partial class CameraRealPlay : Window
{
    #region

    private ICameraSDK CameraSdk { get; }

    #endregion

    public CameraRealPlay(ICameraSDK cameraSdk)
    {
        InitializeComponent();
        CameraSdk = cameraSdk;
    }

    #region Base

    public void StartPlay()
    {
        IntPtr hwnd = ((HwndSource)PresentationSource.FromVisual(player)).Handle;
        CameraSdk.StartPlay(hwnd);
    }

    public void StopPlay()
    {
        CameraSdk.StopPlay();
    }

    #endregion

    private const int GWL_STYLE = -16;
    private const int WS_MAXIMIZEBOX = 0x10000;
    private const int WS_MINIMIZEBOX = 0x20000;
    private const int SWP_NOSIZE = 0x0001;
    private const int SWP_NOMOVE = 0x0002;
    private const int SWP_NOZORDER = 0x0004;
    private const int SWP_FRAMECHANGED = 0x0020;

    [DllImport("user32.dll", EntryPoint = "GetWindowLong", CharSet = CharSet.Auto)]
    private static extern int GetWindowLong32(IntPtr hWnd, int nIndex);

    [DllImport("user32.dll")]
    private static extern int GetWindowLongPtr(IntPtr hwnd, int index);

    [DllImport("user32.dll", EntryPoint = "SetWindowLong", CharSet = CharSet.Auto)]
    private static extern int SetWindowLong32(IntPtr hwnd, int index, int value);

    [DllImport("user32.dll")]
    private static extern int SetWindowLongPtr(IntPtr hwnd, int index, int value);

    [DllImport("user32.dll")]
    private static extern bool SetWindowPos(IntPtr hWnd, int hWndInsertAfter, int x, int Y, int cx, int cy, int wFlags);

    #region Util

    public void HideMinButton()
    {
        IntPtr hwnd = new WindowInteropHelper(this).Handle;
        if (IntPtr.Size == 4)
        {
            var currentStyle = GetWindowLong32(hwnd, GWL_STYLE);
            _ = SetWindowLong32(hwnd, GWL_STYLE, (currentStyle & ~WS_MINIMIZEBOX));
        }
        else
        {
            var currentStyle = GetWindowLongPtr(hwnd, GWL_STYLE);
            _ = SetWindowLongPtr(hwnd, GWL_STYLE, (currentStyle & ~WS_MINIMIZEBOX));
        }
        //call SetWindowPos to make sure the SetWindowLongPtr take effect according to MSDN
        SetWindowPos(hwnd, 0, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE | SWP_NOZORDER | SWP_FRAMECHANGED);
    }

    public bool IsClosed { get; private set; }

    protected override void OnClosed(EventArgs e)
    {
        base.OnClosed(e);
        IsClosed = true;
        StopPlay();
    }

    #endregion
}