[英]Why I am getting C3646 on an IAsyncAction declaration?
Probably a dumb question (WinRT noob), but, here is goes...可能是一个愚蠢的问题(WinRT noob),但是,这里是......
The code from "App.xaml.h" is: “App.xaml.h”中的代码是:
namespace winrt::Precog::implementation
{
struct App : AppT<App>
{
App();
void OnLaunched(Microsoft::UI::Xaml::LaunchActivatedEventArgs const&);
private:
std::wstring cfgDatabase = L"";
winrt::Microsoft::UI::Xaml::Window window{ nullptr };
IAsyncAction loadSettings();
};
}
When I try to compile, Visual Studio gives me a C3646 (unknown override specifier) at the IAsyncAction declaration?当我尝试编译时,Visual Studio 在 IAsyncAction 声明中给了我一个 C3646(未知的覆盖说明符)?
The loadSettings implementation is: loadSettings 实现是:
IAsyncAction App::loadSettings()
{
PHKEY regKey = NULL;
LSTATUS regResult;
regResult = RegCreateKey(HKEY_CURRENT_USER, L"Precog", regKey);
if (regResult != ERROR_SUCCESS)
{
ContentDialog errorDialog = ContentDialog();
errorDialog.Title(box_value(L"Erro"));
errorDialog.Content(box_value(L"Pateta"));
errorDialog.CloseButtonText(L"Ok");
errorDialog.XamlRoot(window.Content().XamlRoot());
auto result = co_await errorDialog.ShowAsync();
}
else
{
co_return;
}
}
EDIT: Full compiler output:编辑:完整编译器 output:
Build started...
1>------ Build started: Project: Precog, Configuration: Debug x64 ------
1>C:\Program Files\Microsoft Visual Studio\2022\Community\MSBuild\Current\Bin\amd64\Microsoft.Common.CurrentVersion.targets(2304,5): warning MSB3106: Assembly strong name "C:\Code\Precog\packages\Microsoft.WindowsAppSDK.1.0.0\build\native\..\..\lib\uap10.0\Microsoft.Windows.System.winmd" is either a path which could not be found or it is a full assembly name which is badly formed. If it is a full assembly name it may contain characters that need to be escaped with backslash(\). Those characters are Equals(=), Comma(,), Quote("), Apostrophe('), Backslash(\).
1>C:\Program Files\Microsoft Visual Studio\2022\Community\MSBuild\Current\Bin\amd64\Microsoft.Common.CurrentVersion.targets(2304,5): warning MSB3106: Assembly strong name "C:\Code\Precog\packages\Microsoft.WindowsAppSDK.1.0.0\build\native\..\..\lib\uap10.0\Microsoft.Windows.PushNotifications.winmd" is either a path which could not be found or it is a full assembly name which is badly formed. If it is a full assembly name it may contain characters that need to be escaped with backslash(\). Those characters are Equals(=), Comma(,), Quote("), Apostrophe('), Backslash(\).
1>App.xaml.cpp
1>C:\Code\Precog\Precog\Precog\App.xaml.h(17,22): error C3646: 'loadSettings': unknown override specifier
1>C:\Code\Precog\Precog\Precog\App.xaml.h(17,34): error C2059: syntax error: '('
1>C:\Code\Precog\Precog\Precog\App.xaml.h(17,36): error C2238: unexpected token(s) preceding ';'
1>C:\Code\Precog\Precog\Precog\App.xaml.cpp(35,19): error C2039: 'loadSettings': is not a member of 'winrt::Precog::implementation::App'
1>C:\Code\Precog\Precog\Precog\App.xaml.h(7): message : see declaration of 'winrt::Precog::implementation::App'
1>C:\Code\Precog\Precog\Precog\App.xaml.cpp(48,30): error C2065: 'window': undeclared identifier
1>Done building project "Precog.vcxproj" -- FAILED.
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
Got it.知道了。 It seemed to be a namespace mismatch, since changing the declaration to:
这似乎是命名空间不匹配,因为将声明更改为:
winrt::Windows::Foundation::IAsyncAction loadSettings();
Solved the problem.解决了这个问题。 The interesting bit is that Intellisense does not catch the error (no red line underneath the type), only the compiler does.
有趣的是,Intellisense 不会捕获错误(类型下方没有红线),只有编译器会捕获。
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