WriteableBitmap 不可用？

发布于 2024-07-26 11:12:09 字数 1219 浏览 7 评论 0 原文

我发现什么可能是 WriteableBitmap？我尝试按照文档包含相关命名空间：

using namespace System::Windows::Media;
using namespace System::Windows::Media::Imaging;

但这只会给我带来错误：

d:\experiments\graphicscontrols\graphicscontrollib\GraphicsControlLibControl.h(9) : error C2039: 'Media' : is not a member of 'System::Windows'
d:\experiments\graphicscontrols\graphicscontrollib\GraphicsControlLibControl.h(10) : error C3083: 'Media': the symbol to the left of a '::' must be a type
d:\experiments\graphicscontrols\graphicscontrollib\GraphicsControlLibControl.h(10) : error C2039: 'Imaging' : is not a member of 'System::Windows'
d:\experiments\graphicscontrols\graphicscontrollib\GraphicsControlLibControl.h(52) : error C2065: 'WriteableBitmap' : undeclared identifier

我是否安装了旧版本的 .net 还是其他版本？有什么方法可以知道 Visual Studio 使用的是什么版本吗？我已经将 VS 更新到了 service pack 1，这没有什么区别。

原文

I've discovered what may be the perfect answer to a question on buffered drawing, but for some reason my version of VS2008 doesn't seem to have a WriteableBitmap? I've tried including the relevent namespaces as per the documentation:

using namespace System::Windows::Media;
using namespace System::Windows::Media::Imaging;

But that just gives me errors:

d:\experiments\graphicscontrols\graphicscontrollib\GraphicsControlLibControl.h(9) : error C2039: 'Media' : is not a member of 'System::Windows'
d:\experiments\graphicscontrols\graphicscontrollib\GraphicsControlLibControl.h(10) : error C3083: 'Media': the symbol to the left of a '::' must be a type
d:\experiments\graphicscontrols\graphicscontrollib\GraphicsControlLibControl.h(10) : error C2039: 'Imaging' : is not a member of 'System::Windows'
d:\experiments\graphicscontrols\graphicscontrollib\GraphicsControlLibControl.h(52) : error C2065: 'WriteableBitmap' : undeclared identifier

Do I have an older version of .net installed or something? Is there any way to tell what version visual studio is using? I've updated VS to service pack 1 which made no difference.

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