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);
if Col mod 2 = 0 then grd.Options := grd.Options + [goEditing] else grd.Options := grd.Options - [goEditing];
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 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;
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;
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;
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;
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 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; .........
stringgrid如何清空
with StringGrid1 do for I := 0 to ColCount - 1 do Cols[I].Clear;