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procedure TForm1.ADrawText(Canvas: TCanvas; AText: string; ARect: TRect);
var
H, W, X, Y: Integer;
begin
Canvas.Brush.Style := bsClear;
H := Canvas.TextHeight('a');
w := Canvas.TextWidth(AText);
X := ARect.Left + (ARect.Right - ARect.Left - W) div 2;
Y := ARect.Top + (ARect.Bottom - ARect.top - H) div 2;
if X < ARect.Left then X := ARect.Left;
Canvas.TextOut(x, y, AText);
end;
可以用Bmp.weidth, bmp.height设置其大小,我用的是2007procedure TForm1.RzListView1DrawHeader(Sender: TObject; Canvas: TCanvas;
Index: Integer; Rect: TRect);
var
bmp : TBitmap;
Str: string;
ARect: TRect;
begin
bmp := TBitmap.Create;
try
bmp.SetSize(1, Rect.Bottom - Rect.Top);
bmp.Canvas.Brush.Color := clBlue;
bmp.Canvas.FillRect(bmp.Canvas.ClipRect);
ARect := Rect;
if Index = RzListView1.Columns.Count - 1 then
begin
ARect.Right := ARect.Right
end;
Canvas.StretchDraw(ARect, bmp);
Canvas.Pen.Color := $00838383;
Canvas.MoveTo(ARect.Right - 1, ARect.Top + 1);
Canvas.LineTo(ARect.Right - 1, ARect.Bottom - 1);
if Index = 0 then
begin
Canvas.Pen.Color := $FF6E6E6E;
Canvas.MoveTo(ARect.Left , ARect.Top + 1);
Canvas.LineTo(ARect.Left , ARect.Bottom - 1);
end;
Str := RzListView1.Columns[Index].Caption;
ADrawText(Canvas, Str, ARect);
finally
bmp.Free;
end;
end;
可以在bmp里面装图片,效果会比较好,THeadControl也是差不多的写法