VC7（VS2003.net）中开发ActiveX控件相关

今天在VC7上开发ActiveX控件，添加函数害的我挣了一下午，现在想想真是怀恋VC6的ClassWizard啊。在网上找了很多资料，也没发现与此相关的，所以就记录下来，仅供参考啊

创建ActiveX工程后，只能靠手动添加函数，这里要注意四个地方都要修改，才能最终达到效果：
1、.h中：加入函数声明

afx_msg short display(LPCTSTR lpszData);

2、.cpp中加入函数映射

BEGIN_DISPATCH_MAP(CtestCtrl, COleControl)
	DISP_FUNCTION_ID(CtestCtrl,"display",2223,display,VT_I2,VTS_BSTR)
END_DISPATCH_MAP()

在此处注意下：DISP_FUNCTION_ID的几个参数：
I、该类的名称
II、类中扩展名同后面的函数名一样，只是多了双引号
III、显示的ID（尽量用大点的，一面和某些ID冲突）
IV、函数名
V、返回值类型：
VI、参数类型

    VT_EMPTY = 0,
    VT_NULL = 1,
    VT_I2 = 2,
    VT_I4 = 3,
    VT_R4 = 4,
    VT_R8 = 5,
    VT_CY = 6,
    VT_DATE = 7,
    VT_BSTR = 8,
    VT_DISPATCH = 9,
    VT_ERROR = 10,
    VT_BOOL = 11,
    VT_VARIANT = 12,
    VT_UNKNOWN = 13,
    VT_DECIMAL = 14,
    VT_I1 = 16,
    VT_UI1 = 17,
    VT_UI2 = 18,
    VT_UI4 = 19,
    VT_I8 = 20,
    VT_UI8 = 21,
    VT_INT = 22,
    VT_UINT = 23,
    VT_VOID = 24,
    VT_HRESULT  = 25,
    VT_PTR = 26,
    VT_SAFEARRAY = 27,
    VT_CARRAY = 28,
    VT_USERDEFINED = 29,
    VT_LPSTR = 30,
    VT_LPWSTR = 31,
    VT_FILETIME = 64,
    VT_BLOB = 65,
    VT_STREAM = 66,
    VT_STORAGE = 67,
    VT_STREAMED_OBJECT = 68,
    VT_STORED_OBJECT = 69,
    VT_BLOB_OBJECT = 70,
    VT_CF = 71,
    VT_CLSID = 72,
    VT_VECTOR = 0x1000,
    VT_ARRAY = 0x2000,
    VT_BYREF = 0x4000,
    VT_RESERVED = 0x8000,
    VT_ILLEGAL = 0xffff,
    VT_ILLEGALMASKED = 0xfff,
    VT_TYPEMASK = 0xfff

VI、参数类型
3、CPP中加入函数实现：

short CtestCtrl::display(LPCTSTR lpszData)
{
   AfxMessageBox(lpszData);
}

4、.idl 文件中还要加相关的接口调度说明

[id(2223)]short display(BSTR lpszData);

这四个地方加好了就完工了~~