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//Ansistring 转 char
void
__fastcall TForm1::Button1Click(TObject *Sender)
{
AnsiString Test =
"哈哈"
;
char
*chr = Test.c_str();
}
//char转Ansistring
#include
void
__fastcall TForm1::Button1Click(TObject *Sender)
{
AnsiString str =
"Sample"
;
char
chr[MAX_PATH];
strcpy
( chr , str.c_str() );
}
//Bool转AnsiString
void
__fastcall TForm1::Button1Click(TObject *Sender)
{
AnsiString Test=BoolToStr(CheckBox1->Checked);
}
//Ansistring转bool
void
__fastcall TForm1::Button1Click(TObject *Sender)
{ AnsiString Test=
"-1"
CheckBox1->Checked= StrToBool( Test );
}
//int转ansistring
void
__fastcall TForm1::Button1Click(TObject *Sender)
{
int
i = 123;
AnsiString str = IntToStr( i );
}
//AnsiString转double
void
__fastcall TForm1::Button1Click(TObject *Sender)
{
AnsiString Test =
"123"
;
long
double
d = StrToFloat( Test );
}
//double转AnsiString
void
__fastcall TForm1::Button1Click(TObject *Sender)
{
double
d = 123.456;
AnsiString str = FloatToStr( d );
}
//double转AnsiString并四舍五入
void
__fastcall TForm1::Button1Click(TObject *Sender)
{
long
double
d = 123.456121212;
AnsiString str = FloatToStrF( d , ffFixed ,5 , 4 );
//说明FloatTostrF里5代表从第几个数字的后一位开始四舍五入,4代表取4位小数。
//执行后得到str是123.4600。:roll:
}
//double转AnsiString使用类似vb的format函数
void
__fastcall TForm1::Button1Click(TObject *Sender)
{
double
d = 123.456;
AnsiString str = FormatFloat(
"000000.00"
, d );
}
//得到 000123.45,当然你可以使用"# . , ; E+ E- xx"等符号,你自己试试 :wink:
//AnsiString转Tclor型
void
__fastcall TForm1::Button1Click(TObject *Sender)
{
AnsiString Test =
"0x00FF8080"
;
TColor Col = StringToColor( Test );
}
//Tcolor转AnsiString
void
__fastcall TForm1::Button1Click(TObject *Sender)
{
TColor Col = 0x00FF8080;
AnsiString str = ColorToString( Col );
}
//消除AnsiString 中的一部分字符串 代码:
void
__fastcall TForm1::Button1Click(TObject *Sender)
{
AnsiString Test =
"ABCDEF"
;
int
First = 3;
// 消除制定开头
int
Length = 2;
// 消除制定长度
AnsiString Dstr = Test.Delete( First , Length );
}
//得到ABEF
//在AnsiString 中插入字符串
void
__fastcall TForm1::Button1Click(TObject *Sender)
{
AnsiString Test =
"ABCDEF"
;
AnsiString Ins =
"12345"
;
// 插入串
int
Pos = 3;
// 在哪插
AnsiString Istr = Test.Insert( Ins , Pos );
//得到AB12345CDEF
}
//取得ansi某一位字符
void
__fastcall TForm1::Button1Click(TObject *Sender)
{
AnsiString Test =
"ABCDEF"
;
AnsiString Npos = Test[3];
//得到C
}
//取得AnsiString里最后一个字符
void
__fastcall TForm1::Button1Click(TObject *Sender)
{
AnsiString Test =
"ABCDEF"
;
char
*Lstr = Test.AnsiLastChar();
//得到F
}
//取出AnsiString字符,这个类似vb的mid函数!
void
__fastcall TForm1::Button1Click(TObject *Sender)
{
AnsiString Test =
"ABCDEF"
;
int
First = 3;
// 3开始取
int
Length = 2;
// 取2位
AnsiString Getstr = Test.SubString( First , Length );
//得到CD
}
//AnsiString的字母比较
void
__fastcall TForm1::Button1Click(TObject *Sender)
{
AnsiString Test =
"ABCDEF"
;
AnsiString Sample =
"abcdef"
;
int
Result = Test.AnsiCompare( Sample );
//返回1,不同!分大小写。
}
void
__fastcall TForm1::Button1Click(TObject *Sender)
{
AnsiString Test =
"ABCDEF"
;
AnsiString Sample =
"abcdef"
;
int
Result = Test.AnsiCompareIC( Sample );
//返回0,相同!没有分大小写,哈哈
}
//在AnsiString中寻找字符
void
__fastcall TForm1::Button1Click(TObject *Sender)
{
AnsiString Test =
"ABCDEF"
;
AnsiString Sample =
"E"
;
int
Result = Test.Pos( Sample );
//返回5,如果你写Sample="haha",就返回0,找不到,哈哈
}
//在AnsiString中找字符串,和上一个类似
void
__fastcall TForm1::Button1Click(TObject *Sender)
{
AnsiString Test =
"ABCDEF"
;
AnsiString Sample =
"EF"
;
int
Result = Test.Pos( Sample );
//返回5,即E字符的位置
}
//判断字符串长度,类似vb的len
void
__fastcall TForm1::Button1Click(TObject *Sender)
{
AnsiString Test =
"拿金币来"
;
int
Len = Test.Length();
//返回8
}
//取得字符串,类似vb的left
void
__fastcall TForm1::Button1Click(TObject *Sender)
{
AnsiString Test =
"小苹果然看了这篇文章"
;
AnsiString SLstr = Test.SetLength(6);
}
//得到"小苹果"
//检测双字节字串
void
__fastcall TForm1::Button1Click(TObject *Sender)
{
AnsiString ChkStr =
"你好"
;
int
ChkPos = 1 ;
if
( ByteType( ChkStr , ChkPos ) == mbSingleByte ){
Edit1->Text=
"0"
;
}
else
{
Edit1->Text=
"1"
;
}
//返回1,如果你写ChkStr="fxxk",就返回0
}
//检测空字符串
void
__fastcall TForm1::Button1Click(TObject *Sender)
{
AnsiString Test =
""
;
bool
chk = Test.IsEmpty();
if
(chk )
Edit1->Text=
"1"
;
//返回1
}
//全部变小写vs全部变大写
void
__fastcall TForm1::Button1Click(TObject *Sender)
{
AnsiString Test =
"ABCdef"
;
AnsiString Lstr = Test.LowerCase();
}
代码:
void
__fastcall TForm1::Button1Click(TObject *Sender)
{
AnsiString Test =
"ABCdef"
;
AnsiString Ustr = Test.UpperCase();
}
//类似vb中Trim 的去空格函数
void
__fastcall TForm1::Button1Click(TObject *Sender)
{
AnsiString Test =
" ABCDEF "
;
AnsiString TLstr = Test.TrimLeft();
AnsiString TRstr = Test.TrimRight();
AnsiString Tstr = Test.Trim();
}
//但是,这个处理不了全角的空格 代码:
AnsiString __fastcall TForm1::TrimStr( AnsiString Tm , AnsiString LR )
{
// LR … L:左除去 R:右除去 B:dou除去
int
len;
// 左除去
if
( LR ==
"L"
|| LR ==
"B"
){
len = Tm.Length();
while
( Tm.SubString(1,1) ==
" "
|| Tm.SubString(1,2) ==
" "
){
// 半角除去
if
( Tm.SubString(1,1) ==
" "
){
Tm = Tm.SubString(2,len);
len = Tm.Length();
}
// 全角除去
else
if
( Tm.SubString(1,2) ==
" "
){
Tm = Tm.SubString(3,len);
len = Tm.Length();
}
}
}
// 右除去
if
( LR ==
"R"
|| LR ==
"B"
){
len = Tm.Length();
while
( Tm.SubString(len,1) ==
" "
|| Tm.SubString(len-1,2) ==
" "
){
// 半角除去
if
( Tm.SubString(len,1) ==
" "
){
len = Tm.Length();
Tm = Tm.SubString(1,len-1);
len = Tm.Length();
}
// 全角除去
else
if
( Tm.SubString(len-1,2) ==
" "
){
len = Tm.Length();
Tm = Tm.SubString(1,len-2);
len = Tm.Length();
}
}
}
return
Tm;
}
void
__fastcall TForm1::Button1Click(TObject *Sender)
{
AnsiString Test =
" 拳脚 "
;
AnsiString Ret = TrimStr(Test,
"B"
)
}
//相同字符重复输入
void
__fastcall TForm1::Button1Click(TObject *Sender)
{
AnsiString Soc = AnsiString::StringOfChar(
'*'
, 100 );
Edit1->Text=Soc ;
//显示100个*
}
//字符串替换
void
__fastcall TForm1::Button1Click(TObject *Sender)
{
AnsiString Str =
"Borland C++ Builder is free"
;
AnsiString From =
"C++ Builder"
;
AnsiString To =
"Delphi"
;
AnsiString Result;
Result = StringReplace( Str, From, To, TReplaceFlags() <<
rfReplaceAll << rfIgnoreCase );
//<<后是参数,得到Borland Delphi is free
}
//全角变半角
AnsiString Zen =
"1234567890"
;
int
Len = Zen.Length();
char
buf[MAX_PATH];
ZeroMemory( buf,
sizeof
( buf ) );
LCMapString( GetUserDefaultLCID(), LCMAP_HALFWIDTH, Zen.c_str(), Len, buf,
sizeof
( buf ) );
AnsiString Han = AnsiString( buf );
Edit1->Text=Han;
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