我使用下面的代码来调用TaskDialog。
[DllImport("ComCtl32", CharSet = CharSet.Unicode, PreserveSig = false)]
internal static extern void TaskDialogIndirect(
[In] ref TASKDIALOGCONFIG pTaskConfig,
[Out] out int pnButton,
[Out] out int pnRadioButton,
[Out] out bool pfVerificationFlagChecked);但是,我得到异常“无法在DLL‘ComCtl32’中找到名为'TaskDialogIndirect‘的入口点”。
我把this code带走了。我使用的是Windows7 x64 (RC)。
我做错了什么?
发布于 2009-10-23 17:51:30
除了这是一个vista功能之外,没有其他功能。
更新:此问题与并行程序集有关:这些函数仅在comctl32.dll版本6中存在,但出于兼容性原因,除非您另行说明,否则Vista将加载更早的版本。大多数人(包括我)一直采用的方法是使用清单。事实证明,这很棘手,而且可能不是正确的解决方案,特别是如果您正在编写的是一个库:您不一定要强制整个应用程序使用公共控件6。
正确的解决方案是在调用Vista之一时推送new activation上下文。激活上下文将使用正确版本的comctl32.dll,而不会影响应用程序的其余部分,并且不需要任何清单。
幸运的是,这很容易do.Some已经存在的MS Knowledgebase的完整代码。文章中的代码(KB 830033)照原样做了这件事。
可供选择的托管应用编程接口:Vista的TaskDialog和TaskDialogIndirect的完整包装可以在这里找到:
http://code.msdn.microsoft.com/WindowsAPICodePack
对于WPF,请使用以下内容:
从http://code.msdn.microsoft.com/VistaBridge下载“Interop”下载后,打开项目,然后构建它(如果您想查看所有代码,请检查\VistaBridge或\Interop文件夹中的文件)。现在,您可以从VistaBridge\bin\debug\中获取DLL,并在项目中添加对它的引用,还必须为每个不同的VistaBridge模块添加一条using语句。例如:
使用Microsoft.SDK.Samples.VistaBridge.Interop或.Library或.Properties或.Services -取决于您的需求。
VistaBridge项目包括许多其他Vista功能的应用编程接口(例如TaskDialog、Vista和OpenFile对话框,当然还有航空玻璃效果)。要尝试这些功能,请运行VistaBridge项目。
发布于 2013-07-15 12:35:19
使用任务对话框需要Windows公共控件DLL(ComCtl32.dll)版本6!出于兼容性原因,默认情况下,应用程序不绑定到此版本。绑定到版本6的一种方法是在可执行文件(名为YourAppName.exe.manifest)旁边放置一个清单文件,其中包含以下内容:
<dependency>
<dependentAssembly>
<assemblyIdentity
type="win32"
name="Microsoft.Windows.Common-Controls"
version="6.0.0.0"
processorArchitecture="*"
publicKeyToken="6595b64144ccf1df"
language="*"
/>
</dependentAssembly>
</dependency>如果您不想要额外的独立文件,也可以将此清单作为Win32资源嵌入到可执行文件中(名称为RT_MANIFEST,ID设置为1)。如果您将清单文件与项目的属性相关联,则Visual Studio可以为您完成此工作。
发布于 2019-02-21 15:47:14
基于almog.ori的回答(它得到了一些孤立的链接),我对链接的代码做了一个小修改,我困惑了好几天:
MS Knowledgebase帮助(Archiv),完整的代码,由我所做的领养:
using System.Runtime.InteropServices;
using System;
using System.Security;
using System.Security.Permissions;
using System.Collections;
using System.IO;
using System.Text;
namespace MyOfficeNetAddin
{
/// <devdoc>
/// This class is intended to use with the C# 'using' statement in
/// to activate an activation context for turning on visual theming at
/// the beginning of a scope, and have it automatically deactivated
/// when the scope is exited.
/// </devdoc>
[SuppressUnmanagedCodeSecurity]
internal class EnableThemingInScope : IDisposable
{
// Private data
private IntPtr cookie; // changed cookie from uint to IntPtr
private static ACTCTX enableThemingActivationContext;
private static IntPtr hActCtx;
private static bool contextCreationSucceeded = false;
public EnableThemingInScope(bool enable)
{
if (enable)
{
if (EnsureActivateContextCreated())
{
if (!ActivateActCtx(hActCtx, out cookie))
{
// Be sure cookie always zero if activation failed
cookie = IntPtr.Zero;
}
}
}
}
// Finalizer removed, that could cause Exceptions
// ~EnableThemingInScope()
// {
// Dispose(false);
// }
void IDisposable.Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
private void Dispose(bool disposing)
{
if (cookie != IntPtr.Zero)
{
if (DeactivateActCtx(0, cookie))
{
// deactivation succeeded...
cookie = IntPtr.Zero;
}
}
}
private bool EnsureActivateContextCreated()
{
lock (typeof(EnableThemingInScope))
{
if (!contextCreationSucceeded)
{
// Pull manifest from the .NET Framework install
// directory
string assemblyLoc = null;
FileIOPermission fiop = new FileIOPermission(PermissionState.None);
fiop.AllFiles = FileIOPermissionAccess.PathDiscovery;
fiop.Assert();
try
{
assemblyLoc = typeof(Object).Assembly.Location;
}
finally
{
CodeAccessPermission.RevertAssert();
}
string manifestLoc = null;
string installDir = null;
if (assemblyLoc != null)
{
installDir = Path.GetDirectoryName(assemblyLoc);
const string manifestName = "XPThemes.manifest";
manifestLoc = Path.Combine(installDir, manifestName);
}
if (manifestLoc != null && installDir != null)
{
enableThemingActivationContext = new ACTCTX();
enableThemingActivationContext.cbSize = Marshal.SizeOf(typeof(ACTCTX));
enableThemingActivationContext.lpSource = manifestLoc;
// Set the lpAssemblyDirectory to the install
// directory to prevent Win32 Side by Side from
// looking for comctl32 in the application
// directory, which could cause a bogus dll to be
// placed there and open a security hole.
enableThemingActivationContext.lpAssemblyDirectory = installDir;
enableThemingActivationContext.dwFlags = ACTCTX_FLAG_ASSEMBLY_DIRECTORY_VALID;
// Note this will fail gracefully if file specified
// by manifestLoc doesn't exist.
hActCtx = CreateActCtx(ref enableThemingActivationContext);
contextCreationSucceeded = (hActCtx != new IntPtr(-1));
}
}
// If we return false, we'll try again on the next call into
// EnsureActivateContextCreated(), which is fine.
return contextCreationSucceeded;
}
}
// All the pinvoke goo...
[DllImport("Kernel32.dll")]
private extern static IntPtr CreateActCtx(ref ACTCTX actctx);
// changed from uint to IntPtr according to
// https://www.pinvoke.net/default.aspx/kernel32.ActiveActCtx
[DllImport("Kernel32.dll", SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool ActivateActCtx(IntPtr hActCtx, out IntPtr lpCookie);
// changed from uint to IntPtr according to
// https://www.pinvoke.net/default.aspx/kernel32.DeactivateActCtx
[DllImport("Kernel32.dll", SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool DeactivateActCtx(int dwFlags, IntPtr lpCookie);
private const int ACTCTX_FLAG_ASSEMBLY_DIRECTORY_VALID = 0x004;
private struct ACTCTX
{
public int cbSize;
public uint dwFlags;
public string lpSource;
public ushort wProcessorArchitecture;
public ushort wLangId;
public string lpAssemblyDirectory;
public string lpResourceName;
public string lpApplicationName;
}
}
}然后我就这样用它了:
using (new EnableThemingInScope(true))
{
// The call all this mucking about is here for.
VistaUnsafeNativeMethods.TaskDialogIndirect(ref config, out result, out radioButtonResult, out verificationFlagChecked);
}在WPF Task Dialog Wrapper on GitHub提供的TaskDialogInterop.cs中
有关EnableThemingInScope的终结器中可能的SEHException的更多信息,请参阅此Question on SO
https://stackoverflow.com/questions/1612351
复制相似问题