如何在Wx::textCtrl中添加换行符?

Question

我已将柔毛的解决方案编辑到下面的代码示例中。

---

根据在stackoverflow上对这个问题的公认答案，我应该能够通过用'n'结束文本来向Wx::TextCtrl添加额外的行。

my $t = Wx::TextCtrl->new( $p, -1, "$titlen"  ,[-1,-1],[600,260]);
$t->{TERM}->AppendText( "another linen");

不幸的是，

似乎不起作用，如下面的代码所示。我在Windows XP上运行草莓Perl。

package main;
use Modern::Perl;
WxMultiLineCtrl->new()->MainLoop();    
package WxMultiLineCtrl;
use base qw(Wx::App);
use Wx qw (wxVERTICAL wxTOP wxGROW wxHORIZONTAL wxTE_MULTILINE 
           wxFIXED_MINSIZE wxLEFT );
use Wx::Event qw( EVT_BUTTON );
sub OnInit {
    my $app =  shift ;
    my $title='MultiLine Wx Text Control';
    my $frame = Wx::Frame->new(  undef  ,-1,$title,[-1, -1],[640,280]);
    my $p = Wx::Panel->new(    $frame, -1);
    my $v0= Wx::BoxSizer->new(wxVERTICAL);
    my $h1= Wx::BoxSizer->new(wxHORIZONTAL);
    my $h2= Wx::BoxSizer->new(wxHORIZONTAL);
    my $term      = Wx::TextCtrl->new(  $p, -1
                                      , "$titlen"  
                                      , [-1,-1],[600,260]
                                      , wxTE_MULTILINE
                                     );
    my $cancelBtn = Wx::Button->new(   $p, -1, "cancel"  ,[-1,-1],[-1,-1]);
    my $addTxtBtn = Wx::Button->new(   $p, -1, "add text",[-1,-1],[-1,-1]);
    $p->{TERM}=$term;
    EVT_BUTTON(  $p, $cancelBtn, &cancel ); 
    EVT_BUTTON(  $p, $addTxtBtn, &addTxt ); 
    $v0->Add($h1,1,wxLEFT);
    $v0->Add($h2,1,wxLEFT);
    $h1->Add( $term      , 1, wxTOP | wxGROW          , 5 );
    $h2->Add( $cancelBtn , 1, wxTOP | wxFIXED_MINSIZE , 5 );
    $h2->Add( $addTxtBtn , 1, wxTOP | wxFIXED_MINSIZE , 5 );
    $p->SetSizer($v0);
    $p->SetAutoLayout(1);
    $app->SetTopWindow($frame);
    $frame->Show(1);           
}
sub addTxt {shift->{TERM}->AppendText( "another linen");}
sub cancel {exit;}

Answer 1

根据wxWidget手册wxTE_MULTILINE样式只能在控件创建时设置。因此，您需要更改代码如下:

#my $term      = Wx::TextCtrl->new( $p, -1, "$titlen"  ,[-1,-1],[600,260]);
#$term->SetWindowStyle(wxTE_MULTILINE);
my $term = Wx::TextCtrl->new( $p, -1, "$titlen"  ,[-1,-1],[600,260], wxTE_MULTILINE); 

它应该工作!