救命！参数！在线！谢谢！

Question

关键在于VARIANT变量我不会设！

Answer 1

typedef struct tagVARIANT  {
    VARTYPE vt;
    unsigned short wReserved1;
    unsigned short wReserved2;
    unsigned short wReserved3;
    union {
        unsigned char        bVal;                        // VT_UI1.
        short                    iVal;                        // VT_I2    .
        long                    lVal;                        // VT_I4    .
        float                    fltVal;                    // VT_R4    .
        double                dblVal;                    // VT_R8    .
        VARIANT_BOOL        boolVal;                        // VT_BOOL.
        SCODE                    scode;                    // VT_ERROR.
        CY                        cyVal;                    // VT_CY    .
        DATE                    date;                        // VT_DATE.
        BSTR                    bstrVal;                    // VT_BSTR.
        IUnknown                FAR* punkVal;            // VT_UNKNOWN.
        IDispatch             FAR* pdispVal;            // VT_DISPATCH.
        SAFEARRAY            FAR* parray;            // VT_ARRAY|*.
        unsigned char        FAR* pbVal;                // VT_BYREF|VT_UI1.
        short                    FAR* piVal;                // VT_BYREF|VT_I2.
        long                    FAR* plVal;                // VT_BYREF|VT_I4.
        float                    FAR* pfltVal;            // VT_BYREF|VT_R4.
        double                FAR* pdblVal;            // VT_BYREF|VT_R8.
        VARIANT_BOOL        FAR* pboolVal;                // VT_BYREF|VT_BOOL.
        SCODE                    FAR* pscode;            // VT_BYREF|VT_ERROR.
        CY                        FAR* pcyVal;            // VT_BYREF|VT_CY.
        DATE                    FAR* pdate;                // VT_BYREF|VT_DATE.
        BSTR                    FAR* pbstrVal;            // VT_BYREF|VT_BSTR.
        IUnknown FAR*        FAR* ppunkVal;            // VT_BYREF|VT_UNKNOWN.
        IDispatch FAR*        FAR* ppdispVal;        // VT_BYREF|VT_DISPATCH.
        SAFEARRAY FAR*        FAR* pparray;            // VT_ARRAY|*.
        VARIANT                FAR* pvarVal;            // VT_BYREF|VT_VARIANT.
        void                    FAR* byref;                // Generic ByRef.
    };
};
 我也不是很清楚
可以看看MSDN中的说明。

Answer 2

CString str("kkkk");
VARIANT var;
VariantInit(&var);
var.vt = VT_BSTR;
var.bstrVal = str.SysAllocString();
VariantClear(&var);//////////////////BSTR bstr;
bstr = SysAllocString(L"xxxx");
VARIANT var;
VariantInit(&var);
var.vt = VT_BSTR;
var.bstrVal = bstr;
VariantClear(&var);
SysFreeString(&bstr);

Answer 3

或者用COleVariant就可以了COleVariant var("kkkk");
构造函数
COleVariant( const VARIANT& varSrc );COleVariant( const COleVariant& varSrc );COleVariant( LPCVARIANT pSrc );COleVariant( LPCTSTR lpszSrc );COleVariant( LPCTSTR lpszSrc, VARTYPE vtSrc );COleVariant( CString& strSrc );COleVariant( BYTE nSrc );COleVariant( short nSrc, VARTYPE vtSrc = VT_I2 );COleVariant( long lSrc, VARTYPE vtSrc = VT_I4 );COleVariant( const COleCurrency& curSrc );COleVariant( float fltSrc );COleVariant( double dblSrc );COleVariant( const COleDateTime& dateSrc );COleVariant( const CByteArray& arrSrc );COleVariant( const CLongBinary& lbSrc );具体查msdn

Answer 4

VARIANT vf,vs,ve,vo;
memset(&vf,0,sizeof(vf));   //vf需要查询的字符串
memset(&vs,0,sizeof(vs));   //vs开始的地方
memset(&ve,0,sizeof(ve));   //ve结束的地方  
memset(&vo,0,sizeof(vo));   //vo选项
BSTR bstr;
bstr = SysAllocString(L"you need find string");
VARIANT vf;
VariantInit(&vf);
vf.vt = VT_BSTR;
vf.bstrVal = bstr;
VariantClear(&vf);
SysFreeString(&bstr);
vs.vt = VT_I4;     
vs.iVal = 0;       //重头开始      ve.vt = VT_I4;     
ve.iVal = 100;    //查询到100的地方为为止vo.vt = VT_I4;     
vo.iVal = 2;  //2 = 整个单词   4 = MatchCase   8 =NoHighlight      
m_richtextctrl.Find(vf);
//如果没有找到返回-1

Answer 5

long nret = m_richtextctrl.Find(vf,vs,ve,vo);

Answer 6

'Find' : cannot convert parameter 1 
from 'struct tagVARIANT' to 'const char *'

Answer 7

CRichEditCtrl::FindText
long FindText( DWORD dwFlags, FINDTEXTEX* pFindText ) const;