使用toUseExplorerTheme的虚拟TreeView选择宽度

时间:2013-12-17 15:03:11

标签: delphi delphi-xe2 virtualtreeview

当我在toUseExplorerTheme中使用TVirtualStringTree.PaintOptions时,它会像这样绘制选区:

Illustration of selection with toUseExplorerTheme

请注意,选择范围从控件的左侧延伸到任何节点标题的最右侧范围的位置;选择的宽度都相同。

我希望它看起来像这个图像(someone else's project,使用Virtual TreeView),其中选择仅涵盖节点标题的文本:

enter image description here

除非Virtual TreeView中有回归(我使用的是5.2.2),否则这一定是可能的,但我找不到合适的选项组合。

这是我的设置代码:

fTree := TVirtualStringTree.Create(Self);
fTree.Parent            := Self;
fTree.Align             := alClient;

fTree.OnGetText         := TreeGetText;
fTree.OnInitNode        := TreeInitNode;
fTree.OnInitChildren    := TreeInitChildren;
fTree.OnChange          := TreeSelectionChange;
fTree.RootNodeCount     := 1;
fTree.DrawSelectionMode := smBlendedRectangle;

fTree.TreeOptions.PaintOptions     := fTree.TreeOptions.PaintOptions
                                      + [toUseExplorerTheme];
fTree.TreeOptions.SelectionOptions := fTree.TreeOptions.SelectionOptions
                                      + [toMultiSelect];

1 个答案:

答案 0 :(得分:6)

抱歉,that was my fault。我在this issue中建议的陈述应该是:

procedure DrawBackground(State: Integer);
begin
  // if the full row selection is disabled or toGridExtensions is in the MiscOptions, draw the selection
  // into the InnerRect, otherwise into the RowRect
  if not (toFullRowSelect in FOptions.FSelectionOptions) or (toGridExtensions in FOptions.FMiscOptions) then
    DrawThemeBackground(Theme, PaintInfo.Canvas.Handle, TVP_TREEITEM, State, InnerRect, nil)
  else
    DrawThemeBackground(Theme, PaintInfo.Canvas.Handle, TVP_TREEITEM, State, RowRect, nil);
end;

这同样适用于下一个嵌套过程DrawThemedFocusRect。修复程序现在已提交到revision r587,因此请更新您的虚拟树视图。感谢@joachim的合作!