AutoPatientInfoRecorder/src/AntdUI/Lib/Win32.cs

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// COPYRIGHT (C) Tom. ALL RIGHTS RESERVED.
// THE AntdUI PROJECT IS AN WINFORM LIBRARY LICENSED UNDER THE Apache-2.0 License.
// LICENSED UNDER THE Apache License, VERSION 2.0 (THE "License")
// YOU MAY NOT USE THIS FILE EXCEPT IN COMPLIANCE WITH THE License.
// YOU MAY OBTAIN A COPY OF THE LICENSE AT
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING, SOFTWARE
// DISTRIBUTED UNDER THE LICENSE IS DISTRIBUTED ON AN "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
// SEE THE LICENSE FOR THE SPECIFIC LANGUAGE GOVERNING PERMISSIONS AND
// LIMITATIONS UNDER THE License.
// GITEE: https://gitee.com/antdui/AntdUI
// GITHUB: https://github.com/AntdUI/AntdUI
// CSDN: https://blog.csdn.net/v_132
// QQ: 17379620

using System;
using System.Drawing;
using System.Runtime.InteropServices;
using System.Text;

namespace AntdUI
{
    internal class Win32
    {
        internal static void SetBits(Bitmap bitmap, Win32Point topLoc, Win32Size topSize, IntPtr intPtr, byte a = 255)
        {
            IntPtr oldBits = IntPtr.Zero, screenDC = GetDC(IntPtr.Zero), hBitmap = IntPtr.Zero, memDc = CreateCompatibleDC(screenDC);
            try
            {
                Win32Point srcLoc = new Win32Point(0, 0);
                BLENDFUNCTION blendFunc = new BLENDFUNCTION();
                hBitmap = bitmap.GetHbitmap(Color.FromArgb(0));
                oldBits = SelectObject(memDc, hBitmap);
                blendFunc.BlendOp = AC_SRC_OVER;
                blendFunc.SourceConstantAlpha = a;
                blendFunc.AlphaFormat = AC_SRC_ALPHA;
                blendFunc.BlendFlags = 0;
                UpdateLayeredWindow(intPtr, screenDC, ref topLoc, ref topSize, memDc, ref srcLoc, 0, ref blendFunc, ULW_ALPHA);
            }
            finally
            {
                if (hBitmap != IntPtr.Zero)
                {
                    SelectObject(memDc, oldBits);
                    DeleteObject(hBitmap);
                }
                ReleaseDC(IntPtr.Zero, screenDC);
                DeleteDC(memDc);
            }
        }

        internal static void SetBits(Bitmap bitmap, Rectangle rect, IntPtr intPtr, byte a = 255)
        {
            IntPtr oldBits = IntPtr.Zero, screenDC = GetDC(IntPtr.Zero), hBitmap = IntPtr.Zero, memDc = CreateCompatibleDC(screenDC);
            try
            {
                var srcLoc = new Win32Point(0, 0);