Question

我创建了两个树控件小部件和一个滚动条小部件。我有radiobuttons，让用户可以根据按钮选择选择要滚动的小部件。所以我创建了如下小部件：

package require Tk
package require treectrl

namespace eval ::at::GUI {
  variable Priv;
  variable OptionsRB;

  set Priv(treePrimary) "";
  set Priv(treeSecondary) "";
  set Priv(treeScrollbar) "";

  if { ![info exists OptionsRB] } { 
    set OptionsRB(optColor) "ColorOnDraw";
    set OptionsRB(optHighlight) "HighlightBold";

    set OptionsRB(matchColor) "NoColor";

    set OptionsRB(optSelHighlight) "";

    set OptionsRB(scrollTree) "LeftTree";
  }
}

proc ::at::GUI::DrawGUI {} {
  variable Priv;

  set frm_treeFrame [ttk::labelframe .treeFrame -text "Tree Area"];  

  set Priv(treePrimary) [treectrl $frm_treeFrame.treePrimary]
  set Priv(treeSecondary) [treectrl $frm_treeFrame.treeSecondary]

  set Priv(treeScrollbar) [ttk::scrollbar $frm_treeFrame.sb_treeScroll -command "::at::GUI::yview"]

  grid $Priv(treePrimary) $Priv(treeSecondary) $Priv(treeScrollbar) -sticky news;
  grid columnconfigure $frm_treeFrame 0 -weight 1;
  grid columnconfigure $frm_treeFrame 1 -weight 1;
  grid rowconfigure $frm_treeFrame 0 -weight 1;

  set frm_ST [ttk::labelframe .scrollTreeOptions -text "Scroll Option"];

  set rb_leftTree [ttk::radiobutton $frm_ST.rb1 -text "Left Tree" -variable [namespace current]::OptionsRB(scrollTree) -value LeftTree -command [namespace current]::configScroll ]
  set rb_rightTree [ttk::radiobutton $frm_ST.rb2 -text "Right Tree" -variable [namespace current]::OptionsRB(scrollTree) -value RightTree -command [namespace current]::configScroll ] 
  set rb_bothTree [ttk::radiobutton $frm_ST.rb3 -text "Both Tree" -variable [namespace current]::OptionsRB(scrollTree) -value BothTree -command [namespace current]::configScroll ] 

  grid $rb_leftTree -row 1 -padx {30 5} -pady 5 -sticky w
  grid $rb_rightTree -row 2 -padx {30 5} -pady 5 -sticky w
  grid $rb_bothTree -row 3 -padx {30 5} -pady 5 -sticky w

  # Grid all the frames in main window. 
  grid $frm_treeFrame -sticky news;
  grid $frm_ST -sticky news;

  ##############################
  ::at::GUI::CreateLemes $Priv(treePrimary)
  ::at::GUI::CreateLemes $Priv(treeSecondary)

  foreach tree [list $Priv(treePrimary) $Priv(treeSecondary)] {
    for {set i 0} {$i < 20} {incr i} {
      set parent [expr {int(rand()*$i)}]
      $tree item create -tag item$i -button auto
      $tree item lastchild $parent item$i
      $tree item text item$i name item$i
    }
  }
  return;  
}

proc ::at::GUI::CreateLemes {T} {
  $T element create rect rect -fill [list blue selected]
  $T element create name text

  set S [$T style create nameStyle]
  $T style elements $S {rect name};
  $T style layout $S rect -detach yes -iexpand xy;
  $T style layout $S name -detach no -iexpand xy -expand e;

  $T column create -tag name -itemstyle $S -text Items
  $T configure -treecolumn first;
}

proc ::at::GUI::configScroll {args}  {
  variable Priv;
  variable OptionsRB;

  if {$OptionsRB(scrollTree) eq "LeftTree"} {
    $Priv(treePrimary) -yscrollcommand "::at::GUI::yset    $Priv(treeScrollbar)";
  } elseif {$OptionsRB(scrollTree) eq "RightTree"} {
    $Priv(treeSecondary) -yscrollcommand "::at::GUI::yset $Priv(treeScrollbar)";
  } elseif {$OptionsRB(scrollTree) eq "BothTree"} {
    $Priv(treePrimary) -yscrollcommand "::at::GUI::yset    $Priv(treeScrollbar)";
    $Priv(treeSecondary) -yscrollcommand "::at::GUI::yset $Priv(treeScrollbar)";
  }
}

proc ::at::GUI::yset {sb args}  {
  uplevel [linsert $args 0 $sb set]
  ::at::GUI::yview moveto [lindex [$sb get] 0]
}

proc ::at::GUI::yview {args}  {
  variable Priv;
  variable OptionsRB;

  parray OptionsRB;

  if {![info exists $OptionsRB(scrollTree)]} {
    puts "INFO DOESN'T EXIST.";
  }

  if {$OptionsRB(scrollTree) eq "LeftTree"} {
    eval [linsert $args 0 $Priv(treePrimary) yview];
  } elseif {$OptionsRB(scrollTree) eq "RightTree"} {
    eval [linsert $args 0 $Priv(treeSecondary) yview];
  } elseif {$OptionsRB(scrollTree) eq "BothTree"} {
    eval [linsert $args 0 $Priv(treePrimary) yview];
    eval [linsert $args 0 $Priv(treeSecondary) yview];
  }
}

所以在::at::GUI::yview过程中，我收到错误消息can't read "OptionsRB(scrollTree)": no such element in array while executing "info exists $OptionsRB(scrollTree)" ...。所以我尝试使用parray OptionsRB;打印数组数据，结果是

    OptionsRB(optColor) = ColorOnDraw
    OptionsRB(optHighlight) = HighlightBold
    OptionsRB(matchColor) = NoColor
    OptionsRB(optSelHighlight) =

这很奇怪，因为它没有向我显示元素scrollTree。我不知道我是否遗漏了什么。我读到了数组密钥问题here，但这似乎是引用的问题所以不确定缺少什么。任何意见？

更新：即使我在我的命名空间set OptionsRB(scrollTree) "LeftTree";中为此变量赋值，但默认情况下我的Left Tree单选按钮未被选中，我确实看到了onething，我认为这是原因错误，但后来我不知道为什么没有选择默认的radiobutton。

tcl数组 - 错误没有找到这样的元素

0 个答案: