GDI +位图问题

Question

我在项目中遇到了一些在C++中使用GDI plus的问题。我目前只是试图创建一个空白的位图，以便稍后绘制它，但我遇到了一些问题。我当前的代码是这样的：

reptileRect.Height = windowHeight/9; 
reptileRect.Width = windowWidth/15; 
reptileRect.Y = (windowHeight - (windowHeight/4)); 
reptileRect.X = windowWidth * ratio; 



Bitmap bmp = Bitmap((INT)(reptileRect.Width * 2), (INT)(reptileRect.Width * 2)); 

但我发现了一个错误的效果：

"Gdiplus::Bitmap::Bitmap(const Gdiplus::Bitmap &)" (declared at line 638 of "c:\Program Files (x86)\Windows Kits\8.1\Include\um\gdiplusheaders.h") is inaccessible 

和'Gdiplus::Bitmap::Bitmap': cannot access private member declared in class 'Gdiplus::Bitmap'

有谁知道为什么发生这种情况？

感谢

Answer 1

位图拷贝构造函数是私有的，以防止Bitmap类的复制（见相关话题How to return a GDI::Bitmap from a function）。我想你应该尝试直接初始化bmp

Bitmap bmp((INT)(reptileRect.Width * 2), (INT)(reptileRect.Width * 2));