鑻ュ皢char*杞崲鎴怌String錛岄櫎浜嗙洿鎺ヨ祴鍊煎錛岃繕鍙嬌鐢–String::format榪涜銆備緥濡傦細
char chArray[] = "This is a test";
char * p = "This is a test";
鎴?
LPSTR p = "This is a test"; 鎴栧湪宸插畾涔塙nicode搴旂殑鐢ㄧ▼搴忎腑
TCHAR * p = _T("This is a test"); 鎴?
LPTSTR p = _T("This is a test");
CString theString = chArray;
theString.format(_T("%s"), chArray);
theString = p;
2銆丆String杞崲鎴恈har*
鑻ュ皢CString綾昏漿鎹㈡垚char*(LPSTR)綾誨瀷錛屽父甯鎬嬌鐢ㄤ笅鍒椾笁縐嶆柟娉曪細
鏂規(guī)硶涓錛屼嬌鐢ㄥ己鍒惰漿鎹€備緥濡傦細
CString theString( "This is a test" );
LPTSTR lpsz =(LPTSTR)(LPCTSTR)theString; 鏂規(guī)硶浜岋紝浣跨敤strcpy銆備緥濡傦細
CString theString( "This is a test" );
LPTSTR lpsz = new TCHAR[theString.GetLength()+1];
_tcscpy(lpsz, theString); 闇瑕佽鏄庣殑鏄紝strcpy(鎴栧彲縐誨糢nicode/MBCS鐨刜tcscpy)鐨勭浜屼釜鍙傛暟鏄? const wchar_t* (Unicode)鎴朿onst char* (ANSI)錛岀郴緇熺紪璇戝櫒灝嗕細鑷姩瀵瑰叾榪涜杞崲銆?
鏂規(guī)硶涓夛紝浣跨敤CString::GetBuffer銆備緥濡傦細
CString s(_T("This is a test "));
LPTSTR p = s.GetBuffer();
// 鍦ㄨ繖閲屾坊鍔犱嬌鐢╬鐨勪唬鐮?
if(p != NULL) *p = _T('\0');
s.ReleaseBuffer(); // 浣跨敤瀹屽悗鍙婃椂閲婃斁錛屼互渚胯兘浣跨敤鍏跺畠鐨凜String鎴愬憳鍑芥暟
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鐢盡ySQL鏀寔鐨勫垪綾誨瀷鍒楀湪涓嬮潰銆備笅鍒椾唬鐮佸瓧姣嶇敤浜庢弿榪頒腑錛?
M
鎸囧嚭鏈澶х殑鏄劇ず灝哄銆傛渶澶х殑鍚堟硶鐨勬樉紺哄昂瀵告槸 255 銆?
D
閫傜敤浜庢誕鐐圭被鍨嬪茍涓旀寚鍑鴻窡闅忓湪鍗佽繘鍒跺皬鏁扮偣鍚庣殑鏁扮爜鐨勬暟閲忋傛渶澶у彲鑳界殑鍊兼槸30錛屼絾鏄簲璇ヤ笉澶т簬M-2銆?
鏂規(guī)嫭鍙?“[”鍜?#8220;]”)鎸囧嚭鍙夌殑綾誨瀷淇グ絎︾殑閮ㄥ垎銆?
娉ㄦ剰錛屽鏋滀綘鎸囧畾涓涓簡涓篫EROFILL錛孧ySQL灝嗕負璇ュ垪鑷姩鍦板鍔燯NSIGNED灞炴с?
TINYINT[(M)] [UNSIGNED] [ZEROFILL]
涓涓緢灝忕殑鏁存暟銆傛湁絎﹀彿鐨勮寖鍥存槸-128鍒?27錛屾棤絎﹀彿鐨勮寖鍥存槸0鍒?55銆?
SMALLINT[(M)] [UNSIGNED] [ZEROFILL]
涓涓皬鏁存暟銆傛湁絎﹀彿鐨勮寖鍥存槸-32768鍒?2767錛屾棤絎﹀彿鐨勮寖鍥存槸0鍒?5535銆?
MEDIUMINT[(M)] [UNSIGNED] [ZEROFILL]
涓涓腑絳夊ぇ灝忔暣鏁般傛湁絎﹀彿鐨勮寖鍥存槸-8388608鍒?388607錛屾棤絎﹀彿鐨勮寖鍥存槸0鍒?6777215銆?
INT[(M)] [UNSIGNED] [ZEROFILL]
涓涓甯稿ぇ灝忔暣鏁般傛湁絎﹀彿鐨勮寖鍥存槸-2147483648鍒?147483647錛屾棤絎﹀彿鐨勮寖鍥存槸0鍒?294967295銆?
INTEGER[(M)] [UNSIGNED] [ZEROFILL]
榪欐槸INT鐨勪竴涓悓涔夎瘝銆?
BIGINT[(M)] [UNSIGNED] [ZEROFILL]
涓涓ぇ鏁存暟銆傛湁絎﹀彿鐨勮寖鍥存槸-9223372036854775808鍒?223372036854775807錛屾棤絎﹀彿鐨勮寖鍥存槸0鍒?
18446744073709551615銆傛敞鎰忥紝鎵鏈夌畻鏈繍綆楃敤鏈夌鍙風(fēng)殑BIGINT鎴朌OUBLE鍊煎畬鎴愶紝鍥犳浣犱笉搴旇浣跨敤澶т簬9223372036854775807錛?3浣?鐨勬湁絎﹀彿澶ф暣鏁幫紝闄や簡浣嶅嚱鏁幫紒娉ㄦ剰錛屽綋涓や釜鍙傛暟鏄疘NTEGER鍊兼椂錛?銆?鍜?灝嗕嬌鐢˙IGINT榪愮畻錛佽繖鎰忓懗鐫濡傛灉浣犱箻2涓ぇ鏁存暟(鎴栨潵鑷簬榪斿洖鏁存暟鐨勫嚱鏁?錛屽鏋滅粨鏋滃ぇ浜?223372036854775807錛屼綘鍙互寰楀埌鎰忓鐨勭粨鏋溿備竴涓誕鐐規(guī)暟瀛楋紝涓嶈兘鏄棤絎﹀彿鐨勶紝瀵逛竴涓崟綺懼害嫻偣鏁幫紝鍏剁簿搴﹀彲浠ユ槸<=24錛屽涓涓弻綺懼害嫻偣鏁幫紝鏄湪25 鍜?3涔嬮棿錛岃繖浜涚被鍨嬪FLOAT鍜孌OUBLE綾誨瀷椹笂鍦ㄤ笅闈㈡弿榪般侳LOAT(X)鏈夊搴旂殑FLOAT鍜孌OUBLE鐩稿悓鐨勮寖鍥達紝浣嗘槸鏄劇ず灝哄鍜屽皬鏁頒綅鏁版槸鏈畾涔夌殑銆傚湪MySQL3.23涓紝榪欐槸涓涓湡姝ｇ殑嫻偣鍊箋傚湪鏇存棭鐨凪ySQL鐗堟湰涓紝FLOAT(precision)鎬繪槸鏈?浣嶅皬鏁般傝鍙ユ硶涓轟簡ODBC鍏煎鎬ц屾彁渚涖?
FLOAT[(M,D)] [ZEROFILL]
涓涓皬(鍗曠簿瀵?嫻偣鏁板瓧銆備笉鑳芥棤絎﹀彿銆傚厑璁哥殑鍊兼槸-3.402823466E+38鍒?1.175494351E-38錛? 鍜?.175494351E-38鍒?.402823466E+38銆侻鏄樉紺哄搴﹁孌鏄皬鏁扮殑浣嶆暟銆傛病鏈夊弬鏁扮殑FLOAT鎴栨湁<24 鐨勪竴涓弬鏁拌〃紺轟竴涓崟綺懼瘑嫻偣鏁板瓧銆?
DOUBLE[(M,D)] [ZEROFILL]
涓涓甯稿ぇ灝?鍙岀簿瀵?嫻偣鏁板瓧銆備笉鑳芥棤絎﹀彿銆傚厑璁哥殑鍊兼槸-1.7976931348623157E+308鍒?2.2250738585072014E-308銆?0鍜?.2250738585072014E-308鍒?.7976931348623157E+308銆侻鏄樉紺哄搴﹁孌鏄皬鏁頒綅鏁般傛病鏈変竴涓弬鏁扮殑DOUBLE鎴朏LOAT(X)錛?5 < = X < = 53錛変唬琛ㄤ竴涓弻綺懼瘑嫻偣鏁板瓧銆?
DOUBLE PRECISION[(M,D)] [ZEROFILL]
REAL[(M,D)] [ZEROFILL]
榪欎簺鏄疍OUBLE鍚屼箟璇嶃?
DECIMAL[(M[,D])] [ZEROFILL]
涓涓湭鍘嬬緝(unpack)鐨勬誕鐐規(guī)暟瀛椼備笉鑳芥棤絎﹀彿銆傝涓哄鍚屼竴涓狢HAR鍒楋細“鏈帇緙?#8221;鎰忓懗鐫鏁板瓧浣滀負涓涓瓧絎︿覆琚瓨鍌紝鍊肩殑姣忎竴浣嶄嬌鐢ㄤ竴涓瓧絎︺傚皬鏁扮偣錛屽茍涓斿浜庤礋鏁幫紝“-”絎﹀彿涓嶅湪M涓綆椼傚鏋淒鏄?錛屽煎皢娌℃湁灝忔暟鐐規(guī)垨灝忔暟閮ㄥ垎銆侱ECIMAL鍊肩殑鏈澶ц寖鍥翠笌DOUBLE鐩稿悓錛屼絾鏄涓涓粰瀹氱殑DECIMAL鍒楋紝瀹為檯鐨勮寖鍥村彲浠ラ氳繃M鍜孌鐨勯夋嫨琚檺鍒躲傚鏋淒琚渷鐣ワ紝瀹冭璁劇疆涓?銆傚鏋淢琚渷鎺夛紝瀹冭璁劇疆涓?0銆傛敞鎰忥紝鍦∕ySQL3.22閲岋紝M鍙傛暟鍖呮嫭絎﹀彿鍜屽皬鏁扮偣銆?
NUMERIC(M,D) [ZEROFILL]
榪欐槸DECIMAL鐨勪竴涓悓涔夎瘝銆?
DATE
涓涓棩鏈熴傛敮鎸佺殑鑼冨洿鏄?1000-01-01'鍒?9999-12-31'銆侻ySQL浠?YYYY-MM-DD'鏍煎紡鏉ユ樉紺篋ATE鍊鹼紝浣嗘槸鍏佽浣犱嬌鐢ㄥ瓧絎︿覆鎴栨暟瀛楁妸鍊艱祴緇橠ATE鍒椼?
DATETIME
涓涓棩鏈熷拰鏃墮棿緇勫悎銆傛敮鎸佺殑鑼冨洿鏄?1000-01-01 00:00:00'鍒?9999-12-31 23:59:59'銆侻ySQL浠?YYYY-MM-DD HH:MM:SS'鏍煎紡鏉ユ樉紺篋ATETIME鍊鹼紝浣嗘槸鍏佽浣犱嬌鐢ㄥ瓧絎︿覆鎴栨暟瀛楁妸鍊艱祴緇橠ATETIME鐨勫垪銆?
TIMESTAMP[(M)]
涓涓椂闂存埑璁般傝寖鍥存槸'1970-01-01 00:00:00'鍒?037騫寸殑鏌愭椂銆侻ySQL浠YYYMMDDHHMMSS銆乊YMMDDHHMMSS銆乊YYYMMDD鎴朰YMMDD鏍煎紡鏉ユ樉紺篢IMESTAMP鍊鹼紝鍙栧喅浜庢槸鍚鏄?4錛堟垨鐪佺暐)銆?2銆?鎴?錛屼絾鏄厑璁鎬綘浣跨敤瀛楃涓叉垨鏁板瓧鎶婂艱祴緇橳IMESTAMP鍒椼備竴涓猅IMESTAMP鍒楀浜庤褰曚竴涓狪NSERT鎴朥PDATE鎿嶄綔鐨勬棩鏈熷拰鏃墮棿鏄湁鐢ㄧ殑錛屽洜涓哄鏋滀綘涓嶈嚜宸辯粰瀹冭祴鍊鹼紝瀹冭嚜鍔ㄥ湴琚緗負鏈榪戞搷浣滅殑鏃ユ湡鍜屾椂闂淬備綘浠ュ彲浠ラ氳繃璧嬬粰瀹冧竴涓狽ULL鍊艱緗畠涓哄綋鍓嶇殑鏃ユ湡鍜屾椂闂淬?
TIME
涓涓椂闂淬傝寖鍥存槸'-838:59:59'鍒?838:59:59'銆侻ySQL浠?HH:MM:SS'鏍煎紡鏉ユ樉紺篢IME鍊鹼紝浣嗘槸鍏佽浣犱嬌鐢ㄥ瓧絎︿覆鎴栨暟瀛楁妸鍊艱祴緇橳IME鍒椼?
YEAR[(2|4)]
涓涓?鎴?浣嶆暟瀛楁牸寮忕殑騫?緙虹渷鏄?浣?銆傚厑璁哥殑鍊兼槸1901鍒?155錛屽拰0000錛?浣嶅勾鏍煎紡錛夛紝濡傛灉浣犱嬌鐢?浣嶏紝1970-2069( 70-69)銆侻ySQL浠YYY鏍煎紡鏉ユ樉紺篩EAR鍊鹼紝浣嗘槸鍏佽浣犳妸浣跨敤瀛楃涓叉垨鏁板瓧鍊艱祴緇橸EAR鍒椼傦紙YEAR綾誨瀷鍦∕ySQL3.22涓槸鏂扮被鍨嬨傦級
CHAR(M) [BINARY]
涓涓畾闀垮瓧絎︿覆錛屽綋瀛樺偍鏃訛紝鎬繪槸鏄敤絀烘牸濉弧鍙寵竟鍒版寚瀹氱殑闀垮害銆侻鐨勮寖鍥存槸1 锝?255涓瓧絎︺傚綋鍊艱媯绱㈡椂錛岀┖鏍煎熬閮ㄨ鍒犻櫎銆侰HAR鍊兼牴鎹己鐪佸瓧絎﹂泦浠ュぇ灝忓啓涓嶅尯鍒嗙殑鏂瑰紡鎺掑簭鍜屾瘮杈冿紝闄ら潪緇欏嚭BINARY鍏抽敭璇嶃侼ATIONAL CHAR錛堢煭褰㈠紡NCHAR)鏄疉NSI SQL鐨勬柟寮忔潵瀹氫箟CHAR鍒楀簲璇ヤ嬌鐢ㄧ己鐪佸瓧絎﹂泦銆傝繖鏄疢ySQL鐨勭己鐪併侰HAR鏄疌HARACTER鐨勪竴涓緝鍐欍?
[NATIONAL] VARCHAR(M) [BINARY]
涓涓彉闀垮瓧絎︿覆銆傛敞鎰忥細褰撳艱瀛樺偍鏃訛紝灝鵑儴鐨勭┖鏍艱鍒犻櫎(榪欎笉鍚屼簬ANSI SQL瑙勮寖)銆侻鐨勮寖鍥存槸1 锝?255涓瓧絎︺?VARCHAR鍊兼牴鎹己鐪佸瓧絎﹂泦浠ュぇ灝忓啓涓嶅尯鍒嗙殑鏂瑰紡鎺掑簭鍜屾瘮杈冿紝闄ら潪緇欏嚭BINARY鍏抽敭璇嶅箋?VARCHAR鏄疌HARACTER VARYING涓涓緝鍐欍?
TINYBLOB
TINYTEXT
涓涓狟LOB鎴朤EXT鍒楋紝鏈澶ч暱搴︿負255(2^8-1)涓瓧絎︺?
BLOB
TEXT
涓涓狟LOB鎴朤EXT鍒楋紝鏈澶ч暱搴︿負65535(2^16-1)涓瓧絎︺?
MEDIUMBLOB
MEDIUMTEXT
涓涓狟LOB鎴朤EXT鍒楋紝鏈澶ч暱搴︿負16777215(2^24-1)涓瓧絎︺?
LONGBLOB
LONGTEXT
涓涓狟LOB鎴朤EXT鍒楋紝鏈澶ч暱搴︿負4294967295(2^32-1)涓瓧絎︺?
ENUM('value1','value2',...)
鏋氫婦銆備竴涓粎鏈変竴涓肩殑瀛楃涓插璞★紝榪欎釜鍊煎紡閫夎嚜涓庡煎垪琛?value1'銆?value2', ...,鎴朜ULL銆備竴涓狤NUM鏈澶氳兘鏈?5535涓嶅悓鐨勫箋?
SET('value1','value2',...)
涓涓泦鍚堛傝兘鏈夐浂涓垨澶氫釜鍊肩殑涓涓瓧絎︿覆瀵硅薄錛屽叾涓瘡涓涓繀欏諱粠鍊煎垪琛?value1', 'value2', ...閫夊嚭銆備竴涓猄ET鏈澶氳兘鏈?4涓垚鍛樸?/span>
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鑽ｈ錛欳紼嬪簭璁捐涔嬪洓涔︿簲緇?
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| 鏉ヨ嚜:bookread |
| 姝や功鏋跺287浜洪噷鐨?span id=pp>208浜烘湁鐢? |
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Edit<杈撳叆妗?/span>> 1.(CWnd *)GetDlgItem(IDC_EDIT_1))->SetWindowText("0"); 2.int n=GetDlgItemInt(IDC_EDIT_1, NULL,true); 3.(CWnd *)GetDlgItem(IDC_EDIT_1))->GetWindowText(cs); Combox<涓嬫媺妗?/span>> 1.((CComboBox *)GetDlgItem(IDC_COMB_1))->SetCurSel(1); 2. GetDlgItemText(IDC_COMB_1, cs, 50); 3.int i=m_COM.GetCurSel(); m_COM.GetLBText(i,cs); 4.m_COM.AddString(cs);m_COM.DeleteString(0);m_COM.SetCurSel(0); Radio<鍗曢夋寜閽?/span>> 1.((CButton *)GetDlgItem(IDC_RADIO_1))->SetCheck(true); 
2.if (((CButton *)GetDlgItem(IDC_RADIO_1))->GetCheck()) 
{} 3.((CButton *)GetDlgItem(IDC_RADIO_1))->SetCheck(true); List Control<鍒楄〃> 1.m_list2.SetExtendedStyle(LVS_EX_FULLROWSELECT|LVS_EX_GRIDLINES); m_list2.InsertColumn(0,"TagID",LVCFMT_LEFT,60); m_list2.InsertColumn(1,"TagType",LVCFMT_CENTER,120); m_list2.InsertItem(i,cs1); m_list2.SetItemText(i,1,cs2); 2.if(m_list2.GetSelectedItem()!=-1) { 
int i=m_list2.GetSelectionMark(); cs=m_list2.GetItemText(i,0); 
} 3.int i=m_List2.GetItemCount(); 4.m_list2.DeleteItem(i);m_list2.DeleteAllItems(); ListBox<鍒楄〃妗?/span>> 1.((CListBox *)listBox)->InsertString(0, str); Button<鎸夐挳> 1.((CWnd *)GetDlgItem(IDC_BUTTON_1))->ShowWindow(true); 2.((CWnd *)GetDlgItem(IDC_BUTTON_1))->EnableWindow(true);
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{
......
public:
typedef ITaskbarList *LPITaskbarList;
LPITaskbarList pTaskbar;
......
};
Step 2: 鍒濆鍖?浠誨姟鏍廋OM 瀵硅薄
BOOL CXDlg::OnInitDialog()
{
......
// Initializes the Component Object Model(COM)
CoInitialize(0);
// We call below function since we only need to create one object
CoCreateInstance(
CLSID_TaskbarList,
0,
CLSCTX_INPROC_SERVER,
IID_ITaskbarList,
(void**)&pTaskbar
);
// Below function will initialize the taskbar list object
pTaskbar->HrInit();
......
}
Step 3: 浣跨敤錛氬垹闄?鏄劇ず 浠誨姟鏍忕▼搴忔寜閽?/u>
void CXDlg::OnBnClickedButtonHide()
{
pTaskbar->DeleteTab(this->GetSafeHwnd());
}
void CXDlg::OnBnClickedButtonShow()
{
pTaskbar->AddTab(this->GetSafeHwnd());
}
]]>