StringGrid使用全书

StringGrid行列的增加和删除
如何编写使StringGrid中的一列具有Check功能，和CheckBox效果一样
StringGrid组件Cells内容分行显示在Tstringgrid.ondrawcell事件中
在StringGrid怎样制作只读的列在 OnSelectCell事件处理程序中
stringgrid从文本读入的问题
StringGrid组件Cells内容对齐
StringGird的行列背景色设置
怎么改变StringGrid控件某一列的背景和某一列的只读属性
StringGrid控件标题栏的对齐
怎么改变StringGrid控件某一列的背景和某一列的只读属性
StringGrid控件标题栏的对齐
在stringGrid中使用回车键模拟TAB键切换单元格的功能实现
stringgrid如何清空
让记录在StringGrid中分页显示在
打印StringGrid
如何实现在stringgrid中删除鼠标点中的那一行，下一行再顶上的效果
让stringgrid点列头进行排序
正确地设置StringGrid列宽而不截断任何一个文字方法
实现StringGrid的删除，插入，排序行操作
TstringGrid 的行列合并研究

 

StringGrid行列的增加和删除
type
 TExCell = class(TStringGrid)

public
 procedure DeleteRow(ARow: Longint);
 procedure DeleteColumn(ACol: Longint);
 procedure InsertRow(ARow: LongInt);
 procedure InsertColumn(ACol: LongInt);
end;

procedure TExCell.InsertColumn(ACol: Integer);
begin
 ColCount :=ColCount +1;
 MoveColumn(ColCount-1, ACol);
end;

procedure TExCell.InsertRow(ARow: Integer);
begin
 RowCount :=RowCount +1;
 MoveRow(RowCount-1, ARow);
end;

procedure TExCell.DeleteColumn(ACol: Longint);
begin
 MoveColumn(ACol, ColCount -1);
 ColCount := ColCount - 1;
end;

procedure TExCell.DeleteRow(ARow: Longint);
begin
 MoveRow(ARow, RowCount - 1);
 RowCount := RowCount - 1;
end;

 

 

  如何编写使StringGrid中的一列具有Check功能，和CheckBox效果一样
 unit Unit1;

interface

uses
 Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs, Grids;

type
 TForm1 = class(TForm)
 grid: TStringGrid;
 procedure FormCreate(Sender: TObject);
 procedure gridDrawCell(Sender: TObject; ACol, ARow: Integer;
 Rect: TRect; State: TGridDrawState);
 procedure gridClick(Sender: TObject);

 private
{ Private declarations }

 public
{ Public declarations }

end;

var
 Form1: TForm1;
 fcheck,fnocheck:tbitmap;

implementation

{$R *.DFM}

procedure TForm1.FormCreate(Sender: TObject);
var
 i:SmallInt;
 bmp:TBitmap;
begin
 FCheck:= TBitmap.Create;
 FNoCheck:= TBitmap.Create;
 bmp:= TBitmap.create;
 try
   bmp.handle := LoadBitmap( 0, PChar(OBM_CHECKBOXES ));
   With FNoCheck Do Begin
     width := bmp.width div 4;
     height := bmp.height div 3;
     canvas.copyrect( canvas.cliprect, bmp.canvas, canvas.cliprect );
   End;
 With FCheck Do Begin
   width := bmp.width div 4;
   height := bmp.height div 3;
   canvas.copyrect(canvas.cliprect, bmp.canvas, rect( width, 0, 2*width, height ));
 End;
 finally
   bmp.free
 end;
end;

procedure TForm1.gridDrawCell(Sender: TObject; ACol, ARow: Integer; Rect: TRect; State: TGridDrawState);
begin
 if not (gdFixed in State) then
   with TStringGrid(Sender).Canvas do
 begin
   brush.Color:=clWindow;
   FillRect(Rect);
   if Grid.Cells[ACol,ARow]='yes' then
     Draw( (rect.right + rect.left - FCheck.width) div 2, (rect.bottom + rect.top - FCheck.height) div 2, FCheck )
   else
     Draw( (rect.right + rect.left - FCheck.width) div 2, (rect.bottom + rect.top - FCheck.height) div 2, FNoCheck );
 end;
end;

procedure TForm1.gridClick(Sender: TObject);
begin
 if grid.Cells[grid.col,grid.row]='yes' then
   grid.Cells[grid.col,grid.row]:='no'
 else
   grid.Cells[grid.col,grid.row]:='yes';
end;

end.

 2003-11-17 16:23:23    StringGrid组件Cells内容分行显示在Tstringgrid.ondrawcell事件中：

 DrawText(StringGrid1.Canvas.Handle,pchar(StringGrid1.Cells[Acol,Arow]),Length(StringGrid1.Cells[Acol,Arow]),Rect,DT_WORDBREAK or DT_LEFT);

可以实现文字换行！

 2003-11-17 16:24:04    在StringGrid怎样制作只读的列在 OnSelectCell事件处理程序中,加入: (所有的列均设成可修改的)

 if Col mod 2 = 0 then
   grd.Options := grd.Options + [goEditing]
 else
   grd.Options := grd.Options - [goEditing];

 2003-11-17 16:25:07    stringgrid从文本读入的问题（Save/Load a TStringGrid to/from a file?）stringgrid从文本读入的问题（Save/Load a TStringGrid to/from a file?）

// Save a TStringGrid to a file
procedure SaveStringGrid(StringGrid: TStringGrid; const FileName: TFileName);
var
 f: TextFile;
 i, k: Integer;
begin
 AssignFile(f, FileName);
 Rewrite(f);
 with StringGrid do
 begin
   // Write number of Columns/Rows
   Writeln(f, ColCount);
   Writeln(f, RowCount);
   // loop through cells
   for i := 0 to ColCount - 1 do
     for k := 0 to RowCount - 1 do
       Writeln(F, Cells[i, k]);
 end;
 CloseFile(F);
end;

// Load a TStringGrid from a file
procedure LoadStringGrid(StringGrid: TStringGrid; const FileName: TFileName);
var
 f: TextFile;
 iTmp, i, k: Integer;
 strTemp: String;
begin
 AssignFile(f, FileName);
 Reset(f);
 with StringGrid do
 begin
   // Get number of columns
   Readln(f, iTmp);
   ColCount := iTmp;
   // Get number of rows
   Readln(f, iTmp);
   RowCount := iTmp;
   // loop through cells & fill in values
   for i := 0 to ColCount - 1 do
     for k := 0 to RowCount - 1 do
     begin
       Readln(f, strTemp);
       Cells[i, k] := strTemp;
     end;
   end;
 CloseFile(f);
end;

// Save StringGrid1 to 'c:.txt':
procedure TForm1.Button1Click(Sender: TObject);
begin
 SaveStringGrid(StringGrid1, 'c:.txt');
end;

// Load StringGrid1 from 'c:.txt':
procedure TForm1.Button2Click(Sender: TObject);
begin
 LoadStringGrid(StringGrid1, 'c:.txt');
end;

*******************************************

打开一个已有的文本文件,并将内容放到stringgrid中,文本行与stringgrid行一致;
在文本中遇到空格则放入下一cells.
搞定！注意，我只写了一个空格间隔的，你自己修改一下splitstring可以用多个空格分隔！

procedure TForm1.Button1Click(Sender: TObject);
var
 aa,bb:tstringlist;
 i:integer;
begin
 aa:=tstringlist.Create;
 bb:=tstringlist.Create;
 aa.LoadFromFile('c:.txt');
 for i:=0 to aa.Count-1 do
 begin
   bb:=SplitString(aa.Strings[i],' ');
   stringgrid1.Rows[i]:=bb;
 end;
 aa.Free;
 bb.Free;
end;

其中splitstring为：

function SplitString(const source,ch:string):tstringlist;
var
 temp:string;
 i:integer;
begin
 result:=tstringlist.Create;
 temp:=source;
 i:=pos(ch,source);
 while i<>0 do
 begin
   result.Add(copy(temp,0,i-1));
   delete(temp,1,i);
   i:=pos(ch,temp);
 end;
 result.Add(temp);
end;

 

StringGrid组件Cells内容对齐

在StringGrid的DrawCell事件中添加类似的代码就可以了：

VAR
 vCol, vRow : LongInt;
begin
 vCol := ACol; vRow := ARow;
 WITH Sender AS TStringGrid, Canvas DO
   IF vCol = 2 THEN BEGIN ///对于第2列设置为右对齐
     SetTextAlign(Handle, TA_RIGHT);
     FillRect(Rect);
     TextRect(Rect, Rect.RIGHT-2, Rect.Top+2, Cells[vCol, vRow]);
   END;
end;

 2003-11-17 16:28:41    当我将StringGird的options属性中包含goRowSelect项时每当我选中StringGrid中一行，则选中行用深蓝色显示，我想将深蓝色改为其他颜色应怎样该？当我将StringGird的options属性中包含goRowSelect项时每当我选中StringGrid中一行，则选中行用深蓝色显示，我想将深蓝色改为其他颜色应怎样该？

procedure TForm1.StringGrid1DrawCell(Sender: TObject; ACol, ARow: Integer;
Rect: TRect; State: TGridDrawState);
begin
 With StringGrid1 do
 begin
   If  (ARow= Krow) and not (acol = 0) then
   begin
      Canvas.Brush.Color :=clYellow;// ClBlue;
      Canvas.FillRect(Rect);
      Canvas.font.color:=ClBlack;
      Canvas.TextOut(rect.left , rect.top, cells[acol, arow]);
   end;
 end;
end;

procedure TForm1.StringGrid1SelectCell(Sender: TObject; ACol,
 ARow: Integer; var CanSelect: Boolean);
begin
 krow := Arow;  //*
 kcol := Acol;
end;

注意：必须把变量KROW的值初始为1或其他不为0的值，否则如果锁定第一行的话，第一行的颜色将被自设颜色取代，而锁定行不会被重画。

 2003-11-17 16:32:44    怎么改变StringGrid控件某一列的背景和某一列的只读属性,StringGrid控件标题栏的对齐.怎么改变StringGrid控件某一列的背景和某一列的只读属性,StringGrid控件标题栏的对齐.
请参考以下代码：
 在OnDrawCell事件中处理背景色。程序如下：
//将第二列背景变为红色。
procedure TForm1.StringGrid1DrawCell(Sender: TObject; ACol, ARow: Integer;
 Rect: TRect; State: TGridDrawState);
begin
 if not((acol=1) and (arow>=stringgrid1.fixedrows)) then exit;
 with stringgrid1 do
 begin
   canvas.Brush.color:=clRed;
   canvas.FillRect(Rect);
   canvas.TextOut(rect.left+2,rect.top+2,cells[acol,arow])
 end;
end;

//加入如下代码,那么StringGrid的第四列就只读了.其他列非只读
procedure TForm1.StringGrid1SelectCell(Sender: TObject; ACol, ARow: Integer; var CanSelect: Boolean);
begin
 with StringGrid1 do begin
   if ACol = 4 then
     Options := Options - [goEditing]
   else Options := Options + [goEditing];
end;

procedure TForm1.StringGrid1DrawCell(Sender: TObject; ACol, ARow: Integer; Rect: TRect; State: TGridDrawState);
var
 dx,dy:byte;
begin
 if (acol = 4) and not (arow = 0) then
   with stringgrid1 do
   begin
     canvas.Brush.color := clYellow;
     canvas.FillRect(Rect);
     canvas.font.color := clblue;
     dx:=2;//调整此值，控制字在网格中显示的水平位置
     dy:=2;//调整此值，控制字在网格中显示的垂直位置
     canvas.TextOut(rect.left+dx , rect.top+dy , cells[acol, arow]);
   end;
//控制标题栏的对齐
 if (arow = 0) then
   with stringgrid1 do
   begin
     canvas.Brush.color := clbtnface;
     canvas.FillRect(Rect);
     dx := 12; //调整此值，控制字在网格中显示的水平位置
     dy := 5; //调整此值，控制字在网格中显示的垂直位置
     canvas.TextOut(rect.left + dx, rect.top + dy, cells[acol, arow]);
   end;
end;

 2003-11-17 16:37:15    在stringGrid中使用回车键模拟TAB键切换单元格的功能实现......
procedure TForm1.StringGrid1KeyPress(Sender: TObject; var Key: Char);
 label
 nexttab;
begin
 if key=#13 then
 begin
   key:=#0;
   nexttab:
   if (stringgrid1.Col<stringgrid1.ColCount-1) then
     begin
       stringgrid1.Col:=stringgrid1.Col+1;
     end
   else
   begin
     if stringgrid1.Row>=stringgrid1.RowCount-1 then
       stringgrid1.RowCount:=stringgrid1.rowCount+1;
     stringgrid1.Row:=stringgrid1.Row+1;
     stringgrid1.Col:=0;
     goto nexttab;
   end;
 end;
end;
.........

 2003-11-17 16:42:17    stringgrid如何清空with StringGrid1 do for I := 0 to ColCount - 1 do Cols[I].Clear;

 2003-11-17 16:44:00    选中某单元格,然后在该单元格中修改-> 选中某单元格,然后在该单元格中修改

设置属性:
   StringGrid1.Options:=StringGrid1.Options+[goEditing];

 2003-11-17 16:46:14    让记录在StringGrid中分页显示在Uses中加入： ADOInt

//首先设定PageSize，取出PageCount
procedure TForm1.Button1Click(Sender: TObject);
begin
 ADoquery1.Recordset.PageSize :=spinedit1.Value;
 Edit1.Text := IntToStr(ADoquery1.Recordset.PageCount);
 ShowData(spinedit2.Value);
end;

//然后将AbsolutePage的数据乾坤大挪移到StringGrid1中
procedure TForm1.ShowData(page:integer);
var
 iRow, iCol, iCount : Integer;
 rs : ADOInt.Recordset;
begin
 ADoquery1.Recordset.AbsolutePage:=Page;
 Currpage:=page;
 iRow := 0;
 iCol := 1;
 stringgrid1.Cells[iCol, iRow] := 'FixedCol1';
 Inc(iCol);
 stringgrid1.Cells[iCol, iRow] := 'FixedCol2';
 Inc(iRow);
 Dec(iCol);
 rs := adoquery1.Recordset;
 for iCount := 1 to SpinEdit1.Value do
 begin
   stringgrid1.Cells[iCol, iRow] := rs.Fields.Get_Item('FieldName1').Value;
   Inc(iCol);
   stringgrid1.Cells[iCol, iRow] := rs.Fields.Get_Item('FieldName1').Value;
   Inc(iRow);
   Dec(iCol);
   rs.MoveNext;
 end;

//上一页
procedure TForm1.Button2Click(Sender: TObject);
begin
 If (CurrPage)<>1 then
   ShowData(CurrPage-1);
end;

//下一页
procedure TForm1.Button3Click(Sender: TObject);
begin
 If CurrPage<>ADoquery1.Recordset.PageCount then
   ShowData(CurrPage+1);
end;

 2003-11-17 16:48:51    打印StringGrid的程序源码这段代码没有看懂，但是可能有的朋友需要，所以共享一下子：）

procedure TForm1.SpeedButton11Click(Sender: TObject);
Var
 Index_R ,ALeft: Integer;
 Index : Integer;
begin
 StringGrid_File('D:/AAA.TXT');
 if Not LinkTextFile then
 begin
   ShowMessage('失败');
   Exit;
 end;
 //
 QuickRep1.DataSet := ADOTable1;
 Index_R := ReSize(StringGrid1.Width);
 ALeft := 13;
 Create_Title(TitleBand1,ALeft,24,HeaderControl1.Sections.Items[0].Width,20,
    HeaderControl1.Sections[0].Text,taLeftJustify);
 with Create_QRDBText(DetailBand1,ALeft,8,StringGrid1.ColWidths[0],20,
        StringGrid1.Font,taLeftJustify) do
 begin
   DataSet := ADOTable1;
   DataField := ADOTable1.Fields[0].DisplayName;
 end;
 ALeft := ALeft + StringGrid1.ColWidths[0] * Index_R + Index_R;
 For Index := 1 to ADOTable1.FieldCount - 1 do
 begin
   Create_VLine(TitleBand1,ALeft - 13,16,1,40);
   Create_Title(TitleBand1,ALeft,24,HeaderControl1.Sections.Items[Index].Width,20,
     HeaderControl1.Sections[Index].Text,taLeftJustify);
   Create_VLine(DetailBand1,ALeft - 13,-1,1,31);
   with Create_QRDBText(DetailBand1,ALeft ,8,StringGrid1.ColWidths[Index] * Index_R,20,
        StringGrid1.Font,taLeftJustify) do
   begin
     DataSet := ADOTable1;
     DataField := ADOTable1.Fields[Index].DisplayName;
   end;
   ALeft := ALeft + StringGrid1.ColWidths[Index] *  Index_R + Index_R;
 end;
 QuickRep1.Preview;
end;

function TForm1.ReSize(AGridWidth: Integer): Integer;
begin
 Result := Trunc(718 / AGridWidth);
end;

function TForm1.StringGrid_File(AFileName: String): Boolean;
var
 StrValue : String;
 Index : Integer;
 ACol , ARow : Integer;
 AFileValue : System.TextFile;
begin
 StrValue := '';
 Try
   AssignFile(AFileValue , AFileName);
   ReWrite(AFileValue);
   StrValue := HeaderControl1.Sections[0].Text;
   For Index := 1 to HeaderControl1.Sections.Count - 1 do
     StrValue := StrValue + ',' + HeaderControl1.Sections[Index].Text;
   Writeln(AFileValue,StrValue);
   StrValue := '';
   For  ARow := 0 To StringGrid1.RowCount - 1 do
   begin
     StrValue := '';
     StrValue := StringGrid1.Cells[0,ARow];
     For ACol := 1 To StringGrid1.ColCount - 1 do
     begin
       StrValue := StrValue + ', ' + StringGrid1.Cells[ACol,ARow];
     end;
     Writeln(AFileValue,StrValue);
   end;
 Finally
   CloseFile(AFileValue);
 end;
end;

function TForm1.LinkTextfile: Boolean;
begin
 Result := False;
 with ADOTable1 do
 begin
   {ConnectionString := 'Provider=Microsoft.Jet.OLEDB.4.0;' +
                       'Data Source= D:/;Extended Properties=Text;' +
                       'Persist Security Info=False';
   TableName := 'AAA#TXT';
   Open;       }
   if Active then
     Result := True;
 end;
end;

 

 

 

//排序StringGrid

procedure SortStringGrid(var GenStrGrid: TStringGrid; ThatCol: Integer);
const
//指定分隔字符
  TheSeparator = '@';
var
  CountItem, I, J, K, ThePosition: integer;
  MyList: TStringList;
  MyString, TempString: string;
begin
  //取StringGrid行数
  CountItem := GenStrGrid.RowCount;
  //创建 List
  MyList        := TStringList.Create;
  MyList.Sorted := False;
  try
    begin
      for I := 1 to (CountItem - 1) do
        MyList.Add(GenStrGrid.Rows[I].Strings[ThatCol] + TheSeparator +
          GenStrGrid.Rows[I].Text);
      //排序 List
      Mylist.Sort;

      for K := 1 to Mylist.Count do
      begin
        //获取每行字符串
        MyString := MyList.Strings[(K - 1)];
        //查找分隔字符在字符串中位置
        ThePosition := Pos(TheSeparator, MyString);
        TempString  := '';
        TempString := Copy(MyString, (ThePosition + 1), Length(MyString));
        MyList.Strings[(K - 1)] := '';
        MyList.Strings[(K - 1)] := TempString;
      end;

      //填充 StringGrid
      for J := 1 to (CountItem - 1) do
        GenStrGrid.Rows[J].Text := MyList.Strings[(J - 1)];
    end;
  finally
    //释放 List
    MyList.Free;
  end;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  SortStringGrid(StringGrid1, 1);
end;