|
TListView;
//这个子过程是用来画CheckBox和ImageList的
procedure Draw_CheckBox_ImageList(r: TRect; aCanvas: TCanvas; Checked: Boolean);
var
R1: TRect;
i: Integer;
begin
if Sender.Checkboxes then
begin
aCanvas.Pen.Color := clBlack;
aCanvas.Pen.Width := 2;
//画CheckBox外框
aCanvas.Rectangle(R.Left + 2, R.Top + 2, R.Left + 14, R.Bottom - 2);
if Checked then //画CheckBox的钩
begin
aCanvas.MoveTo(R.Left + 4, R.Top + 6);
aCanvas.LineTo(R.Left + 6, R.Top + 11);
aCanvas.LineTo(R.Left + 11, R.Top + 5);
end;
aCanvas.Pen.Width := 1;
end;
//开始画图标
i := 2; //ImageIndex的值，可以任意
if i > -1 then
begin
//获取图标的RECT
if Boolean(ListView_GetSubItemRect(sender.Handle, item.Index, 0, LVIR_ICON, @R1)) then
begin
//ImageList_Stats.Draw(LV.Canvas, R1.Left, R1.Top, i);
if item.ImageIndex > -1 then
LV.SmallImages.Draw(LV.Canvas, R1.Right + 2, R1.Top, item.ImageIndex);
end;
end;
end;
begin
LV := TListView(Sender);
BoundRect := Item.DisplayRect(drBounds);
InflateRect(BoundRect, -1, 0);
//这个地方你可以根据自己的要求设置成想要的颜色，实现突出显示
LV.Canvas.Font.Color := clBtnText;
//查看是否被选中
if Item.Selected then
begin
if cdsFocused in State then
begin
LV.Canvas.Brush.Color := $00ECCCB9; // //clHighlight;
end
else
begin
LV.Canvas.Brush.Color := $00F8ECE5; //clSilver;
end;
end
else
begin
if (Item.Index mod 2) = 0 then
LV.Canvas.Brush.Color := clWhite
else
LV.Canvas.Brush.Color := $00F2F2F2;
end;
LV.Canvas.FillRect(BoundRect); // 初始化背景
for i := 0 to LV.Columns.Count - 1 do
begin
//获取SubItem的Rect
ListView_GetSubItemRect(LV.Handle, Item.Index, i, LVIR_LABEL, @Rect);
case LV.Columns[i].Alignment of
taLeftJustify:
TextFormat := DT_LEFT;
taRightJustify:
TextFormat := DT_RIGHT;
taCenter:
TextFormat := DT_CENTER;
else
TextFormat := DT_CENTER;
end;
case i of
0: //画Caption,0表示Caption，不是Subitem
begin
//先画选择框和图标
Draw_CheckBox_ImageList(BoundRect, LV.Canvas, Item.Checked);
//再画Caption的文字
InflateRect(Rect, -(5 + il1.Width), 0); //向后移3个像素,避免被后面画线框时覆盖
//InflateRect(Rect, -(5), 0); //向后移3个像素,避免被后面画线框时覆盖
DrawText(LV.Canvas.Handle, PAnsiChar(Item.Caption), Length(Item.Caption), Rect, DT_VCENTER or DT_SINGLELINE or DT_END_ELLIPSIS or TextFormat);
end;
1..MaxInt: //画SubItem[i]
begin
if (i - 1) = 1 then //显示状态条，本示例是第三栏显示，可以随便定
begin
DrawSubItem(LV, Item, i, StrToFloatDef(Item.SubItems[i - 1], 0), 100, 0, True);
end
else
begin
//画SubItem的文字
InflateRect(Rect, -2, -2);
if i - 1 <= Item.SubItems.Count - 1 then
DrawText(LV.Canvas.Handle, PCHAR(Item.SubItems[i - 1]), Length(Item.SubItems[i - 1]), Rect, DT_VCENTER or DT_SINGLELINE or DT_END_ELLIPSIS or TextFormat);
end;
end;
end; //end case
end; //end for
LV.Canvas.Brush.Color := clWhite;
if Item.Selected then //画选中条外框
begin
if cdsFocused in State then//控件是否处于激活状态
LV.Canvas.Brush.Color := $00DAA07A // $00E2B598; //clHighlight;
else
LV.Canvas.Brush.Color := $00E2B598; //$00DAA07A // clHighlight;
LV.Canvas.FrameRect(BoundRect); //
end;
DefaultDraw := False; //不让系统画了
with Sender.Canvas do
if Assigned(Font.OnChange) then
Font.OnChange(Font);
end;
function TForm1.ReDrawItem(HwndLV: HWND; ItemIndex: integer): boolean;
begin
Result := ListView_RedrawItems(HwndLV, ItemIndex, ItemIndex);
end;
procedure |