StringGrid使用全书1

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.

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！

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)

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 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

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