类的构造函数显示调用的问题，不是很难
Graphics *g=Graphics::FromImage(&myimage);

如果不用指向类的指针
直接Graphics g(&myimage);
这句应该怎么写？

也就是问FromImage应该显示地写在哪个位置

[解决办法]
楼主的意思是不用类的静态成员函数而直接用构造函数构造Graphics对象？
MSDN搜索Graphics Methods
Constructor Description
Graphics::Graphics(Image*) Creates a Graphics object that is associated with an Image object.
Graphics::Graphics(HDC) Creates a Graphics object that is associated with a specified device context.
Graphics::Graphics(HDC,HANDLE) Creates a Graphics object that is associated with a specified device context and a specified device.
Graphics::Graphics(HWND,BOOL) Creates a Graphics object that is associated with a specified window.

[解决办法]
这样试试看
Graphics g(*Graphics::FromImage(&myimage));
[解决办法]
应该是楼上的吧。
[解决办法]
为什么LZ名字是中文？