function GetKbStatus():string;
//返回當前鍵盤狀態，包括NUMLoce、Caps Lock、Insert
//每個狀態信息占兩個字符，順序為:NUMLoce、Caps Lock、Insert
//Copy Right 549@11:29 2003-7-22
var Status:string;
KeyStates:TKeyboardState;
begin
GetKeyboardState(KeyStates);
if Odd(KeyStates[VK_NUMLOCK])then
Status:='數字'
else
Status:='光標';
if Odd(KeyStates[VK_CAPITAL]) then
Status:=status+'大寫'
else
Status:=status+'小寫';
if Odd(KeyStates[VK_INSERT]) then
Status:=status+'插入'
else
Status:=status+'改寫';
Result:=Status;
end;
小技巧：
const ErrHead='操作出現錯誤，錯誤信息為：'+#13
try
...
except
on E: Exception do showmessage(ErrHead+E.Message+#13+'當前操作為：xxxxx');
end;
可以讓用戶看到更多的錯誤信息，有助於客戶反饋程序錯誤。
俺寫得比較菜的，但是經常用的就是：
//>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
//執行Sql
//輸入參數：SqlString, ADOQuery
//類型： string, TADOQuery
procedure TMainForm.ExeSql(SqlString: string; ADOQuery: TADOQuery);
begin
with ADOQuery do
begin
Connection := DM.DBAccinfo;//這個是我的，可以添加用的connection
//或者用use也可以。
if Active then
Active := False;
Open;
SQL.Clear;
SQL.Add(SqlString);
ExecSQL;
Close;
end;
end;
可能大家都知道這個。不過，我見過的代碼裡面，
好像很少人這麼來寫這麼獨立出來一個過程。
這個保證我自己原創……
//Open Adoquery
//根據reallike(愛翔(只有lizzy可以叫其他人不能)) 的過程改編
//支持多行sql
//可根據需要自己修改成只支持單行sql的過程，或者exesql過程
//Delphi6下測試通過。
procedure OpenSql(SqlString: tstrings; ADOQuery: TADOQuery);
var i:integer;
begin
with ADOQuery do
begin
Close;
SQL.Clear;
for i:=0 to sqlstring.Count-1 do
SQL.Add(SqlString[i]);
try
Open;
except
on e:exception do showmessage('錯誤：信息如下'+#13+e.Message);
end;
end;
end;
這個是單行sql的
procedure OpenSql1(SqlString: string; ADOQuery: TADOQuery);
begin
with ADOQuery do
begin
Close;
SQL.Clear;
SQL.Add(SqlString);
try
Open;
except
on e:exception do showmessage('錯誤：信息如下'+#13+e.Message);
end;
end;
end;
嗬嗬，謝謝幫我修理這個東西。
不過你不使用Execsql嗎？
我一般都在這個過程外面加try也就是引用他的地方。
也就是
Try
Exesql(sqlstring, Adoquery1)
except
//錯誤提示，亂七八糟的東西。
end
to: reallike(愛翔(只有lizzy可以叫其他人不能))
ExecSql的我也做了
//ExecSql Adoquery
//支持多行sql
//可根據需要自己修改成只支持單行sql的過程，或者exesql過程
//Delphi6下測試通過。
procedure ExeSql(SqlString: tstrings; ADOQuery: TADOQuery);
var i:integer;
begin
with ADOQuery do begin
Close;
SQL.Clear;
for i:=0 to sqlstring.Count-1 do
SQL.Add(SqlString[i]);
try
ExecSql;
except
on e:exception do showmessage('錯誤：信息如下'+#13+e.Message);
end;
end;
end;
//我覺得except放在哪裡都一樣，放在外面好一點，因為，你可以添加一些其他的調試信息
//你說呢？
//有沒有人把執行單行和執行多行的這兩個過程合並成一個，那樣就好了。
我也來兩個，可以根據自己的需要進行增刪，不過是針對DBGridEh的：
//動態建立Col
procedure BuildCol(vFIEldName: string; vCaption: string; vWidth: Integer; var
vGrid: TDBGridEh; iTag: Integer = 0;
FooterType: TFooterValueType = fvtNon; FooterText: string = '';
boolReadOnly: Boolean = True; vColor: TColor = clBtnFace);
var
cCol: TDBGridColumnEh;
cFooterCol: TColumnFooterEh;
begin
cCol := TDBGridColumnEh.Create(vGrid.Columns);
cCol.FieldName := vFIEldName;
cCol.Width := vWidth;
cCol.Title.Caption := vCaption;
cCol.Title.Alignment := taCenter;
cCol.Title.Color := vColor;
cCol.ReadOnly := boolReadOnly;
//如果tag值為-1，則打印dbgrid時不打印該列
cCol.Tag := iTag;
if FooterType <> fvtNon then
begin
cFooterCol := cCol.Footers.Add;
cFooterCol.ValueType := FooterType;
if FooterType = fvtStaticText then
begin
vGrid.FooterRowCount := 1;
cFooterCol.Value := FooterText;
end;
//cCol.Footer.FIEldName:=;
end;
end;
procedure TitleBtnClick(Sender: TObject; ACol: Integer;
Column: TColumnEh; cdsHelper: TClIEntDataSetHelper);
var
cdsTmp: TClIEntDataSet;
begin
with (Sender as TDBGridEh) do
begin
cdsTmp := (DataSource.DataSet as TClIEntDataSet);
if not cdsTmp.Active then Exit;
//設置當前行的排序方式
if Column.Title.SortMarker = smNoneEh then
begin
Column.Title.SortMarker := smUpEh;
cdsHelper.SortByField(Column.FIEldName, soAscending);
end
else
if Column.Title.SortMarker = smUpEh then
begin
Column.Title.SortMarker := smDownEh;
cdsHelper.SortByField(Column.FIEldName, soDescending);
end
else
begin
Column.Title.SortMarker := smNoneEh;
cdsHelper.SortByField(Column.FIEldName, soNoSort);
end;
end;
end;
將DBGrid中各列的位置以及寬度記錄入Ini文件，以及從Ini文件讀取DBGrid中各列位置以及寬度的函數
procedure f_ReadIni(const Now_DBGrid:TDBGrid;Form_Name:String);
var
FilePath:String;
MyIniFile:Tinifile;
Grid_Name,FIEld_Name:String;
Width:integer;
i,j,n:integer;
Column:Array[0..100] of String;
Widths:Array[0..100] of integer;
begin
FilePath := ExtractFilePath(Application.ExeName);
MyIniFile:=TiniFile.Create(FilePath+'gsp.ini');
Grid_Name :=Form_Name+','+Now_DBGrid.Name;
n:= Now_DBGrid.Columns.Count-1 ;
for i:=0 to 100 do column[i]:='';
for i:=0 to n do
begin
Field_Name:=Now_DBGrid.Columns[i].FIEldName;
j:=MyIniFile.ReadInteger(Grid_Name,FIEld_Name,i);
Column[j]:=FIEld_Name;
Widths[j] :=MyIniFile.ReadInteger(Grid_Name,FIEld_Name+'_Width',Now_DBGrid.Columns[i].Width);
end;
for i:=0 to n do
begin
Now_DBGrid.Columns[i].FIEldName := Column[i];
Now_DBGrid.Columns[i].Width := Widths[i];
end;
MyIniFile.Destroy;
end;
procedure f_WriteIni(const Now_DBGrid:TDBGrid;Form_Name:String);
var
FilePath:String;
MyIniFile:Tinifile;
Grid_Name,FIEld_Name:String;
Width:Integer;
i:integer;
begin
FilePath := ExtractFilePath(Application.ExeName);
MyIniFile:=TiniFile.Create(FilePath+'gsp.ini');
Grid_Name :=Form_Name+','+Now_DBGrid.Name;
for i:=0 to Now_DBGrid.Columns.Count-1 do
begin
Field_Name := Now_DBGrid.Columns[i].FIEldName;
Width := Now_DBGrid.Columns[i].Width;
MyIniFile.WriteInteger(Grid_Name,FIEld_Name,i);
MyIniFile.WriteInteger(Grid_Name,FIEld_Name+'_Width',Width);
end;
MyIniFile.Destroy;
end;
很久以前寫得的，現在我都用類封裝了。
unit MyFunc;
interface
uses
Windows, SysUtils, MMSystem, WinSvc, Registry;
function CopyStrLeft(ch: Char; str: string): string;
function CopyStrRight(ch: Char; str: string): string;
function GetSelfPath: string;
procedure HideTask(bHide: Boolean);
function SoundCardInstalled: Boolean;
function GetHostIP: String;
procedure DisableSvc(SvcName: string);
function GetRegisteredOwner: string;
function GetRegisteredOrganization: string;
implementation
function RegisterServiceProcess(dwProcessID, dwType: Integer): Integer; stdcall; external 'KERNEL32.DLL';
function CopyStrLeft(ch: Char; str: string): string;
begin
Result:= Copy(str, 1, Pos(ch, str)-1)
end;
function CopyStrRight(ch: Char; str: string): string;
begin
Result:= Copy(str, Pos(ch, str)+1, Length(str)-Pos(Ch, str)+1)
end;
function GetSelfPath: string;
begin
Result:= ExtractFilePath(ParamStr(0))
end;
procedure HideTask(bHide: Boolean);
begin
if bHide then RegisterServiceProcess(GetCurrentProcessID, 1)
else RegisterServiceProcess(GetCurrentProcessID, 0);
end;
function SoundCardInstalled: Boolean;
begin
Result:= WaveOutGetNumDevs >0
end;
function GetHostIP: String;
type
TaPInAddr = Array[0..10] of PInAddr;
PaPInAddr = ^TaPInAddr;
var
phe: PHostEnt;
PPTr: PaPInAddr;
Buffer: Array[0..63] of Char;
I: Integer;
GInitData: TWSAData;
begin
WSAStartup($101,GInitData);
GetHostName(Buffer,SizeOf(Buffer));
phe:= GetHostByName(buffer);
if phe = nil then Exit;
PPTr:= PaPInAddr(phe^.h_addr_list);
I:= 0;
Result:=inet_ntoa(PPTr^[I]^);
WSACleanup;
end;
procedure DisableSvc(SvcName: string);
var
scMngr: THandle;
scSvc: THandle;
begin
scMngr:= OpenSCManager(nil, nil, sc_Manager_all_Access);
scSvc:= OpenService(scMngr, SvcName, SERVICE_CHANGE_CONFIG);
ChangeServiceConfig(scSvc,
SERVICE_NO_CHANGE,
SERVICE_DISABLED,
SERVICE_NO_CHANGE,
nil,nil,nil,nil,nil,nil,nil);
CloseServiceHandle(scSvc);
end;
function GetRegisteredOwner: string;
var
OSVersion: TOSVersionInfo;
sWinKey: string;
begin
OSVersion.dwOSVersionInfoSize := SizeOf(OSVersion);
GetVersionEx(OSVersion);
case OSVersion.dwPlatformID of
VER_PLATFORM_WIN32_WINDOWS: sWinKey := 'SOFTWAREMicrosoftWindowsCurrentVersion';
VER_PLATFORM_WIN32_NT: sWinKey := 'SOFTWAREMicrosoftWindows NTCurrentVersion';
end;
with TRegistry.Create do
try
RootKey := HKEY_LOCAL_MacHINE;
OpenKey(sWinKey, False);
Result := ReadString('RegisteredOwner');
finally
Free;
end;
end;
function GetRegisteredOrganization: string;
var
OSVersion: TOSVersionInfo;
sWinKey: string;
begin
OSVersion.dwOSVersionInfoSize := SizeOf(OSVersion);
GetVersionEx(OSVersion);
case OSVersion.dwPlatformID of
VER_PLATFORM_WIN32_WINDOWS: sWinKey := 'SOFTWAREMicrosoftWindowsCurrentVersion';
VER_PLATFORM_WIN32_NT: sWinKey := 'SOFTWAREMicrosoftWindows NTCurrentVersion';
end;
with TRegistry.Create do
try
RootKey := HKEY_LOCAL_MacHINE;
OpenKey(sWinKey, False);
Result := ReadString('RegisteredOrganization');
finally
Free;
end;
end;
end.
先放幾個
//刪除某目錄下所有指定擴展名文件
function DelFile(sDir,fExt: string): Boolean;
var
hFindFile: HWND;
FindFileData: WIN32_FIND_DATA;
sr: TSearchRec;
begin
sDir:= sDir + '';
hFindFile:= FindFirstFile(pchar(sDir + fExt), FindFileData);
if hFindFile <> NULL then
begin
deletefile(sDir + FindFileData.cFileName);
while FindNextFile(hFindFile, FindFileData) <> FALSE do
deletefile(sDir + FindFileData.cFileName);
end;
sr.FindHandle:= hFindFile;
FindClose(sr);
end;
//延時
procedure mDelay(MSecs: DWord);
var
BeginTime: DWord;
begin
BeginTime := GetTickCount;
repeat
Application.ProcessMessages;
until GetTickCount - BeginTime >= MSecs;
end;
//格式化浮點型
function my_FormatFloat(r: Real; u: Integer): Real;
var
vStr : String;
I : Integer;
begin
if u <= 0 then
Result := r
else
begin
vStr := '0';
for I := 1 to u - 1 do
vStr := vStr + '0';
vStr := '0.' + vStr;
Result := StrToFloat(FormatFloat(vStr, r));
end;
end;
//得到某字符串中指定位置的子串
//如get_substr('aa##bb##cc##dd','##',3)返回'cc'
function get_substr(s_str,d_str:string;po:integer):string; //s_str大字符串，d_str分隔符,po位置
var
i,j,k:integer;
begin
result:='';
if po<1 then
exit;
s_str:=trim(s_str)+d_str;
i:=0;
while 1=1 do
begin
if pos(d_str,s_str)>0 then
begin
j:=pos(d_str,s_str)+length(d_str);
k:=length(s_str)-(j-1);
i:=i+1;
if i=po then
begin
j:=pos(d_str,s_str);
result:=copy(s_str,1,j-1);
break;
end;
s_str:=copy(s_str,j,k);
end
else
break;
end;
end;
//得到當前日期的月首日和月末日
function get_date(da:TDateTime;zt:integer):TDateTime;
var
yy,mm,dd:string;
begin
yy:=formatdatetime('yyyy',da);
mm:=formatdatetime('mm',da);
if zt=0 then
dd:='01'
else
begin
if strtoint(mm) in [1,3,5,7,8,10,12] then
dd := '31'
else
if mm <> '2' then
dd:='30'
else
if IsLeapYear(YearOf(Da)) then
dd:='29'
else
dd:='28';
end;
DateSeparator := '-';
result:=strtodate(yy + '-' + mm +'-' + dd);
end;
//表的存在與否
function IsExist(tb:String;query:TADOQuery):Boolean;
var
sqlstr:String;
begin
sqlstr:='select * from sysobjects where id=object_id('''+tb+''')';
with query do
begin
close;
sql.Clear;
sql.Add(sqlstr);
open;
end;
if query.Recordset.EOF then
IsExist:=False
else
IsExist:=True;
end;
//用在Excel中，相當於26進制轉換
function int2letter(num:integer):string;
const
LetterStr='ABCDEFGHIJKLMNOPQRSTUVWXYZ';
var
i,j:integer;
begin
if num<=26 then
begin
result:=LetterStr[num];
end
else
begin
j:=num mod 26;
i:=num div 26;
if j=0 then
begin
j:=26;
i:=i-1;
end;
result:=int2letter(i)+LetterStr[j];
end;
end;
//是否整型
function IsInt(AStr: string): Boolean;
var
Value, Code: Integer;
begin
Val(AStr, Value, Code);
Result := Code = 0;
end;
//是否浮點型
function IsFloat(AStr: string): Boolean;
var
Value: Real;
Code: Integer;
begin
Val(AStr, Value, Code);
Result := Code = 0;
end;
下回再來 ：)
procedure RunScreenSave();
//--運行屏幕保護
begin
SendMessage(HWND_BROADCAST, WM_SYSCOMMAND, SC_SCREENSAVE, 0);
end;
//下面兩個函數都是四捨五入的，主要是展現一種思路，隨便用哪個都可以
function MyRound(Value: Double): integer;
//取整四捨五入
//這個版權歸小楓所有
begin
result:= strtoint(FormatFloat('#',value));
end;
function doRound(Value: Double): integer;
//取整四捨五入
//這個我有一半，呵呵。
begin
if Value < 0 then Result:= - doRound( -Value )
else
Result := round(int((value + 0.5) * 10)) div 10;
end;
//當然，這個函數還有其他的寫法，如果你有不同的思路歡迎繼續。。。
補充說明：
round這個函數本身采用的是“四捨六入五成雙”的法則，雖然更科學，但是實際應用中沒有幾個用這種規則的。
我也貼幾個自己常用的：
{-----------------------------------------------------------------------------
過程名: Msg
作者: Gongqin
日期: 2003-6-9 16:57:44
參數: AMsg : String; ATitle : String='提示'; AType : byte=0; btn : Longint=0
AType := 1 顯示"信息"圖標
2 顯示"錯誤"圖標
AMsg(顯示的消息內容) ATitle(顯示標題)
btn := 0 顯示 OK
1 顯示 Ok Cancel
2 顯示 Yes No
3 顯示 Retry and Cancel
4 顯示 Abort, Retry, and Ignore
返回值: Integer
說明： 顯示消息對話框
-----------------------------------------------------------------------------}
function Msg(AMsg: String;ATitle: String;AType: byte;btn: Longint): Integer;
var Flag : Longint;
begin
case AType of
1: Flag := MB_ICONQUESTION; //提問
2: Flag := MB_ICONERROR; //Error
3: Flag := MB_ICONSTOP; //Stop
else
Flag := MB_ICONWARNING;
end;
case btn of
0 : Flag := Flag + MB_OK;
1 : Flag := Flag + MB_OKCANCEL;
2 : Flag := Flag + MB_YESNO;
3 : Flag := Flag + MB_YESNOCANCEL;
4 : Flag := Flag + MB_RETRYCANCEL;
5 : Flag := Flag + MB_ABORTRETRYIGNORE;
end;
result := Application.MessageBox(pchar(AMsg), pchar(ATitle), Flag);
end;
{-----------------------------------------------------------------------------
過程名: getAppPath
作者: Gongqin
日期: 2003-6-9 17:01:17
參數: None
返回值: string
說明： 取應用程序的路徑
如果只用ExtractFilePath(ExtractFilePath(application.Exename))取路徑
可能出錯，所以加了處理
-----------------------------------------------------------------------------}
function getAppPath : string;
var
strTmp : string;
begin
strTmp := ExtractFilePath(ExtractFilePath(application.Exename));
if strTmp[length(strTmp)] <> '' then
strTmp := strTmp + '';
result := strTmp;
end;
下面是我自己整理的
http://www.myf1.Net/bbs/dispbbs.ASP?boardID=5&ID=215239
//計算當前日期所在的季度的第一個月份和最後一個月份
//終極版
function QuarterBegin( TheDate : TDateTime = 0 ) : Integer;
//Copy Right 549@18:25 2003-9-3
begin
Result := ( Quarter( TheDate ) - 1 ) * 3 + 1;
end;
function QuarterEnd( TheDate : TDateTime = 0 ) : Integer;
//Copy Right 549@18:25 2003-9-3
begin
Result := ( Quarter( TheDate ) - 1 ) * 3 + 3;
end;
function Quarter( TheDate : TDateTime = 0 ) : Integer;
//Copy Right 549@10:06 2003-9-5
begin
Result := MonthOf( TheDate );
if TheDate = 0 then Result := MonthOf( Date );
Result := ( Result + 2 ) div 3;
end;
