在的ListView项目和行vsReport着色模式

问题描述

我想要灰色和其他在白色变为彩色一行。结果
我有以下的code，但没有在Windows 7中的搜索栏的垂直线空白
我如何颜色的所有行？

 程序TForm2.Update_ListBoxCustomDrawItem（发件人：TCustomListView;
  项目：TListItem;状态：TCustomDrawState; VAR DefaultDraw：布尔）;
开始
 如果Item.Index模2 = 0
 然后
  开始
   Sender.Canvas.Font.Color：= clBlack;
   Sender.Canvas.Brush.Color：= $ F6F6F6;
  结束
 其他
  开始
   Sender.Canvas.Font.Color：= clBlack;
   Sender.Canvas.Brush.Color：= clWhite;
  结束;
结束;
 

解决方案

设置的OwnerDraw 到真正并添加

 程序TForm1.ListView1DrawItem（发件人：TCustomListView;项目：TListItem;
  RECT：TRect;状态：TOwnerDrawState）;
VAR
  我：整数;
  X1，X2：整数;
  R：TRect;
  小号：字符串;
常量
  DT_ALIGN：数组整数[TAlignment] =（DT_LEFT，DT_RIGHT，DT_CENTER）;
开始
  如果奇（Item.Index），然后
  开始
    Sender.Canvas.Font.Color：= clBlack;
    Sender.Canvas.Brush.Color：= $ F6F6F6;
  结束
  其他
  开始
    Sender.Canvas.Font.Color：= clBlack;
    Sender.Canvas.Brush.Color：= clWhite;
  结束;
  Sender.Canvas.Brush.Style：= bsSolid;
  Sender.Canvas.FillRect（矩形）;
  X1：= 0;
  X2：= 0;
  R：=矩形;
  Sender.Canvas.Brush.Style：= bsCle​​ar;
  对于i：= 0 ListView1.Columns.Count  -  1做
  开始
    增量（2次，ListView1.Columns [I] .WIDTH）;
    r.Left：= X1;
    r.Right：= X2;
    若i = 0，则
      小号：= Item.Caption
    其他
      小号：= Item.SubItems [I]
    DrawText的（Sender.Canvas.Handle，
      S，
      长度（S），
      R，
      DT_SINGLELINE或DT_ALIGN [ListView1.Columns [I] .Alignment]或
        DT_VCENTER或DT_END_ELLIPSIS）;
    X1：= X2;
  结束;
结束;
 

在上面的例子中，第一列是左对齐并且两个其他居中

如果你只有一列，那就是无子：

 程序TForm1.ListView1DrawItem（发件人：TCustomListView;项目：TListItem;
  RECT：TRect;状态：TOwnerDrawState）;
VAR
  R：TRect;
  小号：字符串;
常量
  DT_ALIGN：数组整数[TAlignment] =（DT_LEFT，DT_RIGHT，DT_CENTER）;
开始
  如果奇（Item.Index），然后
  开始
    Sender.Canvas.Font.Color：= clBlack;
    Sender.Canvas.Brush.Color：= $ F6F6F6;
  结束
  其他
  开始
    Sender.Canvas.Font.Color：= clBlack;
    Sender.Canvas.Brush.Color：= clWhite;
  结束;
  Sender.Canvas.Brush.Style：= bsSolid;
  Sender.Canvas.FillRect（矩形）;
  R：=矩形;
  Sender.Canvas.Brush.Style：= bsCle​​ar;
  小号：= Item.Caption;
  DrawText的（Sender.Canvas.Handle，
    S，
    长度（S），
    R，
    DT_SINGLELINE或DT_ALIGN [ListView1.Columns [0] .Alignment]或DT_VCENTER或DT_END_ELLIPSIS）;
结束;
 

I want to color one row in gray and the other in white.
I have the following code but there is white space of vertical lines of columns in Windows 7.
How do I color all rows?

procedure TForm2.Update_ListBoxCustomDrawItem(Sender: TCustomListView;
  Item: TListItem; State: TCustomDrawState; var DefaultDraw: Boolean);
begin
 if Item.Index mod 2=0
 then
  begin
   Sender.Canvas.Font.Color:=clBlack;
   Sender.Canvas.Brush.Color:=$F6F6F6;
  end
 else
  begin
   Sender.Canvas.Font.Color:=clBlack;
   Sender.Canvas.Brush.Color:=clWhite;
  end;
end;

解决方案

Set OwnerDraw to true and add

procedure TForm1.ListView1DrawItem(Sender: TCustomListView; Item: TListItem;
  Rect: TRect; State: TOwnerDrawState);
var
  i: Integer;
  x1, x2: integer;
  r: TRect;
  S: string;
const
  DT_ALIGN: array[TAlignment] of integer = (DT_LEFT, DT_RIGHT, DT_CENTER);
begin
  if Odd(Item.Index) then
  begin
    Sender.Canvas.Font.Color := clBlack;
    Sender.Canvas.Brush.Color := $F6F6F6;
  end
  else
  begin
    Sender.Canvas.Font.Color := clBlack;
    Sender.Canvas.Brush.Color := clWhite;
  end;
  Sender.Canvas.Brush.Style := bsSolid;
  Sender.Canvas.FillRect(Rect);
  x1 := 0;
  x2 := 0;
  r := Rect;
  Sender.Canvas.Brush.Style := bsClear;
  for i := 0 to ListView1.Columns.Count - 1 do
  begin
    inc(x2, ListView1.Columns[i].Width);
    r.Left := x1;
    r.Right := x2;
    if i = 0 then
      S := Item.Caption
    else
      S := Item.SubItems[i];
    DrawText(Sender.Canvas.Handle,
      S,
      length(S),
      r,
      DT_SINGLELINE or DT_ALIGN[ListView1.Columns[i].Alignment] or
        DT_VCENTER or DT_END_ELLIPSIS);
    x1 := x2;
  end;
end;

In the above example, the first column is left-aligned and the two other are centered.

If you only have one column, that is, no subitems:

procedure TForm1.ListView1DrawItem(Sender: TCustomListView; Item: TListItem;
  Rect: TRect; State: TOwnerDrawState);
var
  r: TRect;
  S: string;
const
  DT_ALIGN: array[TAlignment] of integer = (DT_LEFT, DT_RIGHT, DT_CENTER);
begin
  if odd(Item.Index) then
  begin
    Sender.Canvas.Font.Color:=clBlack;
    Sender.Canvas.Brush.Color:=$F6F6F6;
  end
  else
  begin
    Sender.Canvas.Font.Color:=clBlack;
    Sender.Canvas.Brush.Color:=clWhite;
  end;
  Sender.Canvas.Brush.Style := bsSolid;
  Sender.Canvas.FillRect(Rect);
  r := Rect;
  Sender.Canvas.Brush.Style := bsClear;
  S := Item.Caption;
  DrawText(Sender.Canvas.Handle,
    S,
    length(S),
    r,
    DT_SINGLELINE or DT_ALIGN[ListView1.Columns[0].Alignment] or DT_VCENTER or DT_END_ELLIPSIS);
end;

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