今天在书上看到了StringGrid的使用,写的例子很少,以前在做毕业设计时我也使用过这个控件,不过现在都很久没有使用这个控件了,所以都有点生疏了;其实一直以来我经常光顾的一个学习delphi的网站就是万一老师的博客http://del.cnblogs.com/,里面的资料很很多,受益匪浅!今天特地又从网上找了找了点关于StringGrid的用法,并做下统计如下:
在程序设计语言中,二维数组必须先定义后使用,所谓先定义就是要确定二维数组的行数与列数及其数据类型。同样StringGrid组件在使用前也应定义其行数与列数,行数和列数分别用RowCount与ColCount属性动态确定。所以下面先介绍RowCount与ColCount属性。
(1)RowCount属性
RowCount属性用于确定StringGrid组件数据表的行数,可在程序设计时用对象监视器设定,将列数RowCount设置为20。也可在程序执行过程中用赋值语句将行数值赋于RowCount.
(2)ColCount属性
ColCount属性用于确定StringGrid组件数据表的列数,可在程序设计时用对象监视器设定,将列数ColCount设置为9。也可在程序执行过程中用赋值语句将列数值赋于ColCount (3)FixedRows属性
该属性用于设置表格显示过程中固定不变的行数。如设置固定行数为1,此时用鼠标拖动表格的垂直滚动条时,第1行始终保持不变。一般第1行为标题行,标题行应始终保持可见状态。
(4)FixedCols属性
该属性用于设置表格中固定不变的列数。如设置固定列数为1,此时用鼠标拖动表格的水平滚动条时,第1列始终保持不变。
一般情况下,固定行与固定列用与表格中其他单元格不同的颜色来表示,用灰色表示,而普通单元格用白色表示。固定行与固定列的颜色可用FixedColor属性设置。
(5)FixedColor属性
FixedColor属性用于设置固定行与固定列的颜色。
(6)Cells属性
Cells属性用于表示表格中的单元格,格式如下:
property Cells[Col,:Row:‘IntegeI’]:string;
其中,Col与Row分别表示单元格在表格中的列号与行号。例如:
procedure TForml.:ButtonlClick(Sender:’rObject);
var I,J:Integer;
begin
with StringGrid 1 do
for I:=0 to ColCount一1 do
for J:=O to RowCount—l do
Cells[I,J]:=”;
end;
该程序用于将stringGr。idl组件中所有单元格清空。
(7)Option属性
Option属性中有许多取逻辑值的子属性,分别用于控制表格线的显示方式,各行能否互换位置,各列能否互换位置,单元格中数据是否允许编辑等。
(8)单元格宽ColWidths,高RowHeights属性及默认单元格宽DefaultColWidth和高DefaultRowHeight,ColWidths[col] := Colwidths[Col] + 10;DefaultColWidth := 20;
下面将StringGrid的使用大全贴出来,这个是转大富翁里的一个帖子:http://www.delphibbs.com/keylife/iblog_show.asp?xid=4429
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;
2003-11-17 16:22:50 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;
function TForm1.Create_QRDBText(Sender: TWinControl; ALeft, ATop, AWidth,
AHight: Integer; AFont: TFont; AAlignMent: TAlignment): TQRDBText;
var
AQRDBText : TQRDBText;
begin
AQRDBText := TQRDBText.Create(Nil);
with AQRDBText do
begin
Parent := Sender;
Left := ALeft;
Top := ATop;
Width := AWidth;
Height := AHight;
AlignMent := AAlignMent;
Font.Assign(AFont);
end;
Result := AQRDBText;
end;
function TForm1.Create_VLine(Sender: TWinControl; ALeft, ATop, AWidth,
AHight: Integer): TQRShape;
var
AQRShapeV : TQRShape;
begin
AQRShapeV := TQRShape.Create(Nil);
with AQRShapeV do
begin
Parent := Sender;
Left := ALeft;
Top := ATop;
Width := AWidth;
Height := AHight;
end;
Result := AQRShapeV;
end;
procedure TForm1.Create_Title(Sender: TWinControl; ALeft, ATop, AWidth,
AHight: Integer; ACaption: String; AAlignMent: TAlignment);
var
AQRLabel : TQRLabel;
begin
AQRLabel := TQRLabel.Create(Nil);
with AQRLabel do
begin
Parent := Sender;
Left := ALeft;
Top := ATop;
Width := AWidth;
AlignMent := AAlig
2003-11-17 17:00:09 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?
procedure TForm1.Button1Click(Sender: TObject);
var
Sel : TGridRect;
begin
Sel := StringGrid1.Selection;
DeleteRow(Sel.Top);
end;
// delete row
procedure TForm1.DeleteRow(Row: Integer);
var
i : integer;
begin
if (Row < StringGrid1.RowCount) and (Row > Stringgrid1.FixedRows-1) then
if Row < StringGrid1.RowCount - 1 then
begin
for i := Row to StringGrid1.RowCount-1 do
StringGrid1.Rows[i] := StringGrid1.Rows[i+1];
StringGrid1.RowCount := StringGrid1.RowCount - 1;
end
else stringGrid1.Rows[Row].Clear;
end;