秋梦无痕

昨天尝试用Managed C++重写一个算法，发现不会调用Winodws API，用VC++的方法引用完全找不到，后来在MSDN中找到答案了：

#using <mscorlib.dll>
using namespace System::Runtime::InteropServices;
// for DllImportAttribute

namespace Win32API {
[DllImport("Kernel32.dll", EntryPoint = "GetProcessHeap", CharSet = Unicode)]
int GetProcessHeap();

[DllImport("Kernel32.dll", EntryPoint = "HeapAlloc", CharSet = Unicode)]
void * HeapAlloc(int hHeap, int flags, int size);

[DllImport("Kernel32.dll", EntryPoint = "HeapFree", CharSet = Unicode)]
bool HeapFree(int hHeap, int flags, void* block);

[DllImport("Kernel32.dll", EntryPoint = "HeapReAlloc", CharSet = Unicode)]
void * HeapReAlloc(int hHeap, int flags, void* block, int size);

[DllImport("Kernel32.dll", EntryPoint = "HeapSize", CharSet = Unicode)]
int HeapSize(int hHeap, int flags, void* block);

[DllImport("Kernel32.dll", EntryPoint = "CopyMemory", CharSet = Unicode)]
void CopyMemory(void* Destination, void* Source,int Length);
}

然后在程序中Win32API::GetProcessHeap()调用就可以了。

具体的解释和在C#中使用Windows API的方法请参看C#中调用Windows API的要点(by: hahahawk@51blog)