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> 软件开发 > Delphi > 正文 delphi 更改DBGrid 颜色技巧 2013-06-05 08:49:04 我要投稿

1、根据条件更改某一单元格的颜色

[delphi]
procedure TMainFrm.First_DGDrawColumnCell(Sender: TObject;
const Rect: TRect; DataCol: Integer; Column: TColumn;
State: TGridDrawState);
begin
if DM.FirstListStatus.AsString='生产' then begin
     First_DG.Canvas.Font.Color:=clGreen
   end
else begin
     First_DG.Canvas.Font.Color:=clRed;
end;
if DataCol = 4 then
     First_DG.DefaultDrawColumnCell(Rect,DataCol,Column,State);
end;

procedure TMainFrm.First_DGDrawColumnCell(Sender: TObject;
const Rect: TRect; DataCol: Integer; Column: TColumn;
State: TGridDrawState);
begin
if DM.FirstListStatus.AsString='生产' then begin
     First_DG.Canvas.Font.Color:=clGreen
   end
else begin
     First_DG.Canvas.Font.Color:=clRed;
end;
if DataCol = 4 then
     First_DG.DefaultDrawColumnCell(Rect,DataCol,Column,State);
end;

2、多种改变方式

[delphi]
<SPAN style="COLOR: #000000">procedure TMainForm.DBGrid1DrawColumnCell(Sender: TObject;
const Rect: TRect; DataCol: Integer; Column: TColumn;State: TGridDrawState);
var i :integer;
begin
if gdSelected in State then Exit;
//定义表头的字体和背景颜色：
    for i :=0 to (Sender as TDBGrid).Columns.Count-1 do
    begin
      (Sender as TDBGrid).Columns[i].Title.Font.Name :='宋体'; //字体
      (Sender as TDBGrid).Columns[i].Title.Font.Size :=9; //字体大小
      (Sender as TDBGrid).Columns[i].Title.Font.Color :=$000000ff; //字体颜色(红色)
      (Sender as TDBGrid).Columns[i].Title.Color :=$0000ff00; //背景色(绿色)
    end;
//隔行改变网格背景色：
if Query1.RecNo mod 2 = 0 then
    (Sender as TDBGrid).Canvas.Brush.Color := clInfoBk //定义背景颜色
else
    (Sender as TDBGrid).Canvas.Brush.Color := RGB(191, 255, 223); //定义背景颜色
//定义网格线的颜色：
DBGrid1.DefaultDrawColumnCell(Rect,DataCol,Column,State);
with (Sender as TDBGrid).Canvas do //画 cell 的边框
begin
    Pen.Color := $00ff0000; //定义画笔颜色(蓝色)
    MoveTo(Rect.Left, Rect.Bottom); //画笔定位
    LineTo(Rect.Right, Rect.Bottom); //画蓝色的横线
    Pen.Color := $0000ff00; //定义画笔颜色(绿色)
    MoveTo(Rect.Right, Rect.Top); //画笔定位
    LineTo(Rect.Right, Rect.Bottom); //画绿色的竖线
end;
end;</SPAN>

procedure TMainForm.DBGrid1DrawColumnCell(Sender: TObject;
const Rect: TRect; DataCol: Integer; Column: TColumn;State: TGridDrawState);
var i :integer;
begin
if gdSelected in State then Exit;
//定义表头的字体和背景颜色：
    for i :=0 to (Sender as TDBGrid).Columns.Count-1 do
    begin
      (Sender as TDBGrid).Columns[i].Title.Font.Name :='宋体'; //字体
      (Sender as TDBGrid).Columns[i].Title.Font.Size :=9; //字体大小
      (Sender as TDBGrid).Columns[i].Title.Font.Color :=$000000ff; //字体颜色(红色)
      (Sender as TDBGrid).Columns[i].Title.Color :=$0000ff00; //背景色(绿色)
    end;
//隔行改变网格背景色：
if Query1.RecNo mod 2 = 0 then
    (Sender as TDBGrid).Canvas.Brush.Color := clInfoBk //定义背景颜色
else
    (Sender as TDBGrid).Canvas.Brush.Color := RGB(191, 255, 223); //定义背景颜色
//定义网格线的颜色：
DBGrid1.DefaultDrawColumnCell(Rect,DataCol,Column,State);
with (Sender as TDBGrid).Canvas do //画 cell 的边框
begin
    Pen.Color := $00ff0000; //定义画笔颜色(蓝色)
    MoveTo(Rect.Left, Rect.Bottom); //画笔定位
    LineTo(Rect.Right, Rect.Bottom); //画蓝色的横线
    Pen.Color := $0000ff00; //定义画笔颜色(绿色)
    MoveTo(Rect.Right, Rect.Top); //画笔定位
    LineTo(Rect.Right, Rect.Bottom); //画绿色的竖线
end;
end;

3、纵向斑马线效果：实现网格的奇数列和偶数列分别以不同的颜色显示以区别相邻的数据列。