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Windows下bmp（即DIB文件）的具体格式可参见《Windows程序设计（第5版）》，在此不做介绍。Dim fs As FileStream = New FileStream("test.bmp", FileMode.Open, FileAccess.Read)Dim br As BinaryReader = New BinaryReader(fs)br.ReadBytes(14) '先读BITMAPFILEHEADER结构，共14字节Dim img() As Byte = br.Read

C语言函数声明：__declspec(dllexport) int __stdcall test1(int a,const char* str);__declspec(dllexport) void __stdcall test2(unsigned char* buf,int len);VB.NET调用C语言函数：'函数声明<DllImport("test.dll", EntryPoint:="test1")>Public Function test1(ByVal a As