diff --git a/src/Windows/Avalonia.Win32/ClipboardImpl.cs b/src/Windows/Avalonia.Win32/ClipboardImpl.cs index 7d9e0a8bd2..047b7c361f 100644 --- a/src/Windows/Avalonia.Win32/ClipboardImpl.cs +++ b/src/Windows/Avalonia.Win32/ClipboardImpl.cs @@ -12,10 +12,17 @@ namespace Avalonia.Win32 { internal class ClipboardImpl : IClipboard { + private const int OleRetryCount = 10; + private const int OleRetryDelay = 100; + private async Task OpenClipboard() { + var i = OleRetryCount; + while (!UnmanagedMethods.OpenClipboard(IntPtr.Zero)) { + if (--i == 0) + throw new TimeoutException("Timeout opening clipboard."); await Task.Delay(100); } @@ -72,20 +79,32 @@ namespace Avalonia.Win32 { Dispatcher.UIThread.VerifyAccess(); var wrapper = new DataObject(data); + var i = OleRetryCount; + while (true) { - if (UnmanagedMethods.OleSetClipboard(wrapper) == 0) + var hr = UnmanagedMethods.OleSetClipboard(wrapper); + + if (hr == 0) break; - await Task.Delay(100); + + if (--i == 0) + Marshal.ThrowExceptionForHR(hr); + + await Task.Delay(OleRetryDelay); } } public async Task GetFormatsAsync() { Dispatcher.UIThread.VerifyAccess(); + var i = OleRetryCount; + while (true) { - if (UnmanagedMethods.OleGetClipboard(out var dataObject) == 0) + var hr = UnmanagedMethods.OleGetClipboard(out var dataObject); + + if (hr == 0) { var wrapper = new OleDataObject(dataObject); var formats = wrapper.GetDataFormats().ToArray(); @@ -93,16 +112,23 @@ namespace Avalonia.Win32 return formats; } - await Task.Delay(100); + if (--i == 0) + Marshal.ThrowExceptionForHR(hr); + + await Task.Delay(OleRetryDelay); } } public async Task GetDataAsync(string format) { Dispatcher.UIThread.VerifyAccess(); + var i = OleRetryCount; + while (true) { - if (UnmanagedMethods.OleGetClipboard(out var dataObject) == 0) + var hr = UnmanagedMethods.OleGetClipboard(out var dataObject); + + if (hr == 0) { var wrapper = new OleDataObject(dataObject); var rv = wrapper.Get(format); @@ -110,7 +136,10 @@ namespace Avalonia.Win32 return rv; } - await Task.Delay(100); + if (--i == 0) + Marshal.ThrowExceptionForHR(hr); + + await Task.Delay(OleRetryDelay); } } }