74 lines
2.2 KiB
C#
74 lines
2.2 KiB
C#
using SpineViewer.Natives;
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.ComponentModel.Design;
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using System.Data;
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using System.Drawing;
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using System.Linq;
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using System.Runtime.InteropServices;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows.Forms;
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namespace SpineViewer
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{
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[ToolboxItem(true)]
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[Designer(typeof(ComponentDesigner), typeof(IDesigner))]
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[DesignTimeVisible(true)]
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public partial class WallpaperForm: Form
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{
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public WallpaperForm()
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{
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InitializeComponent();
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}
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protected override CreateParams CreateParams
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{
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get
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{
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var cp = base.CreateParams;
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cp.ExStyle = Win32.WS_EX_TOOLWINDOW | Win32.WS_EX_LAYERED;
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return cp;
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}
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}
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protected override void OnLoad(EventArgs e)
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{
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base.OnLoad(e);
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// 设置成嵌入桌面
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var progman = Win32.FindWindow("Progman", null);
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if (progman != IntPtr.Zero)
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{
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// 确保 WorkerW 被创建
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Win32.SendMessageTimeout(progman, Win32.WM_SPAWN_WORKER, IntPtr.Zero, IntPtr.Zero, Win32.SMTO_NORMAL, 1000, out _);
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var workerW = Win32.GetWorkerW();
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if (workerW != IntPtr.Zero)
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{
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Win32.SetLayeredWindowAttributes(Handle, 0, 255, Win32.LWA_ALPHA);
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Win32.SetParent(Handle, workerW); // 嵌入之前必须保证有 WS_EX_LAYERED 标志
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}
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}
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}
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[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
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[Browsable(false)]
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public byte LayeredWindowAlpha
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{
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get
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{
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uint crKey = 0;
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byte bAlpha = 255;
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uint dwFlags = Win32.LWA_ALPHA;
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Win32.GetLayeredWindowAttributes(Handle, ref crKey, ref bAlpha, ref dwFlags);
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return bAlpha;
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}
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set
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{
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Win32.SetLayeredWindowAttributes(Handle, 0, value, Win32.LWA_ALPHA);
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}
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}
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}
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}
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