chfei/HandyControl
1
0 Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

fixed a bug of Screenshot on win7

Browse Source
This commit is contained in:
NaBian committed 2020-04-18 23:22:39 +08:00
1 parent dc64d5cacb
commit f4087574c0
11 files changed
+850 -450
Download Patch File Download Diff File Expand all files Collapse all files

No files matched your search

src/Shared/HandyControl_Shared/Controls/Screenshot/ScreenshotWindow.cs
+58 -4
View File
@@ -1,8 +1,10 @@
using System;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using System.Windows.Interop;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using HandyControl.Data;
@@ -31,6 +33,8 @@ namespace HandyControl.Controls
private BitmapSource _imageSource;
private static readonly Guid BmpGuid = new Guid("{b96b3cab-0728-11d3-9d7b-0000f81ef32e}");
#region const
private const int IntervalLength = 1;
@@ -554,13 +558,63 @@ namespace HandyControl.Controls
var desktopWindowWidth = _desktopWindowRect.Right - _desktopWindowRect.Left;
var desktopWindowHeight = _desktopWindowRect.Bottom - _desktopWindowRect.Top;
var bitmap = InteropMethods.CreateCompatibleBitmap(hdcSrc, desktopWindowWidth, desktopWindowHeight);
var hOld = InteropMethods.SelectObject(hdcDest, bitmap);
var hbitmap = InteropMethods.CreateCompatibleBitmap(hdcSrc, desktopWindowWidth, desktopWindowHeight);
var hOld = InteropMethods.SelectObject(hdcDest, hbitmap);
InteropMethods.BitBlt(hdcDest, 0, 0, desktopWindowWidth, desktopWindowHeight, hdcSrc, 0, 0, InteropValues.SRCCOPY);
InteropMethods.SelectObject(hdcDest, hOld);
InteropMethods.DeleteDC(hdcDest);
InteropMethods.ReleaseDC(_desktopWindowHandle, hdcSrc);
return Imaging.CreateBitmapSourceFromHBitmap(bitmap, IntPtr.Zero, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions());
var status = InteropMethods.Gdip.GdipCreateBitmapFromHBITMAP(new HandleRef(null, hbitmap), new HandleRef(null, IntPtr.Zero), out var bitmap);
if (status != InteropMethods.Gdip.Ok) throw InteropMethods.Gdip.StatusException(status);
using var ms = new MemoryStream();
status = InteropMethods.Gdip.GdipGetImageEncodersSize(out var numEncoders, out var size);
if (status != InteropMethods.Gdip.Ok) throw InteropMethods.Gdip.StatusException(status);
var memory = Marshal.AllocHGlobal(size);
try
{
status = InteropMethods.Gdip.GdipGetImageEncoders(numEncoders, size, memory);
if (status != InteropMethods.Gdip.Ok) throw InteropMethods.Gdip.StatusException(status);
var codecInfo = ImageCodecInfo.ConvertFromMemory(memory, numEncoders).FirstOrDefault(item => item.FormatID.Equals(BmpGuid));
if (codecInfo == null) throw new Exception("ImageCodecInfo is null");
var encoderParamsMemory = IntPtr.Zero;
try
{
var g = codecInfo.Clsid;
status = InteropMethods.Gdip.GdipSaveImageToStream(new HandleRef(this, bitmap),
new InteropValues.ComStreamFromDataStream(ms), ref g,
new HandleRef(null, encoderParamsMemory));
}
finally
{
if (encoderParamsMemory != IntPtr.Zero)
{
Marshal.FreeHGlobal(encoderParamsMemory);
}
}
if (status != InteropMethods.Gdip.Ok)
{
throw InteropMethods.Gdip.StatusException(status);
}
}
finally
{
Marshal.FreeHGlobal(memory);
}
var bitmapImage = new BitmapImage();
bitmapImage.BeginInit();
bitmapImage.CacheOption = BitmapCacheOption.OnLoad;
bitmapImage.StreamSource = ms;
bitmapImage.EndInit();
bitmapImage.Freeze();
return bitmapImage;
}
private void MoveElement(InteropValues.POINT point)