Editing WxBasic

{{Short description|Open-source BASIC interpretation software}}
{{primary sources|date=November 2014}}
{{Lowercase}}
{{Infobox software
| name                   = wxBasic
| logo                   =
| screenshot             =
| caption                =
| collapsible            =
| author                 =
| developer              = David Cuny
| released               = {{Start date and age|2002}}
| latest release version = 2.8.12.43<ref name=news0614>{{cite web|url=http://www.wxbasic.net|title=News, November 2016|publisher=wxbasic.net|access-date=25 September 2017}}</ref>
| latest release date    = {{Start date and age|2016|11|13}}<ref name=news0614/>
| latest preview version =
| latest preview date    =
| frequently updated     =
| programming language   =
| operating system       = [[Cross-platform]]
| platform               =
| size                   =
| language               =
| status                 =
| genre                  =
| license                = [[GNU Lesser General Public License]]
| website                = {{URL|wxbasic.net}}
}}
'''wxBasic''' is a [[free software]] / [[open-source software]], [[cross-platform]] [[BASIC programming language|BASIC]] [[interpreter (computing)|interpreter]]. As it is based on syntax of the BASIC language, it is designed to be simple to learn and understand, and allow novice programmers to write applications for graphical environments like [[Microsoft Windows|Windows]] and [[Linux]] with minimal effort.  wxBasic is a [[bytecode]] based language, like [[Perl]] or [[Java (programming language)|Java]]. It is licensed under the [[LGPL]], so [[proprietary software]]'s source code can be linked against it.

It can create stand-alone [[executable]]s by binding together [[source code]] with the [[Interpreter (computing)|interpreter]]. In contrast with executables created by similar commercial programs like [[Visual Basic]], executables produced by wxBasic do not require any external [[DLL file]], [[Resource (Windows)|resource file]], or [[installer]] to run.  The executable is distributed alone and can be run immediately by [[end-user]]s.  As with programs written in any [[interpreted language]], wxBasic programs may also be run straight from the source code on any platform, if wxBasic is present.   

wxBasic is written primarily in [[C (programming language)|C]], with some [[C++]] linking it to the [[wxWidgets]] library. wxWidgets supplies the cross-platform features. It runs on [[Microsoft Windows]] using native controls, and on [[Linux]] and [[macOS]] using the [[GTK+]] library.<ref>{{cite web|url=https://www.wxbasic.net/downloads|title=Download|publisher=wxbasic.net|access-date=25 September 2017}}</ref> wxBasic is also the basis for the [[SdlBasic]] project.

==Example==
The following program implements a text viewer:

<syntaxhighlight lang="vbscript">
  ' from http://wxbasic.sourceforge.net/phpBB2/viewtopic.php?t=554
  ' Simple Text Viewer written in wxBasic
  dim AppName = "Text Viewer"
  fileName = ""

  ' Main window
  dim frame = new wxFrame( Nothing, -1, AppName & " - Untitled Document" )
  ' Text edit control
  dim control = new wxTextCtrl( frame, -1, "", wxPoint( 0, 0 ),
  wxSize( 100, 100 ), wxTE_MULTILINE | wxTE_READONLY | wxTE_RICH)

  ' Status bar - The one at the bottom of the window
  dim status = frame.CreateStatusBar( 1 )
  frame.SetStatusText("Ready")
  '
  ' Dialog used for Open
  dim fileDialog = new wxFileDialog( frame )
  '
  ' add menubar to the frame
  dim mBar = new wxMenuBar()
  frame.SetMenuBar(mBar)
  '
  ' build the "File" dropdown menu
  dim mFile = new wxMenu()
  mBar.Append(mFile, "&File")

  ' make it
  '
  mFile.Append( wxID_OPEN, "&Open...", "Loads an existing file from disk" )
  '
  mFile.AppendSeparator()
  mFile.Append( wxID_EXIT, "E&xit\tAlt-X", "Exit Application" )

  Sub onFileOpen( event )
     fileDialog.SetMessage("Open File")
     fileDialog.SetStyle( wxOPEN )
     If fileDialog.ShowModal() = wxID_OK Then
       fileName = fileDialog.GetPath()
       Ext = fileDialog.GetFilename()
       control.Clear()
       control.LoadFile( fileName )
       frame.SetTitle( AppName & " - " & fileName )
       frame.SetStatusText(Ext)
    End If
  End Sub
  '
  Connect( frame, wxID_OPEN, wxEVT_COMMAND_MENU_SELECTED, "onFileOpen" )

  Sub onFileExit( event )
    frame.Close(True)
  End Sub
  '
  Connect( frame, wxID_EXIT, wxEVT_COMMAND_MENU_SELECTED, "onFileExit" )

  ' build the "Help" dropdown menu
  dim mHelp = new wxMenu()
  mBar.Append(mHelp, "&Help")
  mHelp.Append( wxID_HELP, "&About\tF1", "About this program" )
  '
  Sub onHelpAbout( event )
    Dim msg = "Text View allows any text file\n" &
    "to be viewed regardless of its extension.\n" &
    "If the file being opened isn't a text file\n" &
    "then it won't be displayed. There will be a\n" &
    "little garbage shown and that's all."
    wxMessageBox( msg, "About Text View", wxOK + wxICON_INFORMATION, frame )
  End Sub
  Connect( frame, wxID_HELP, wxEVT_COMMAND_MENU_SELECTED, "onHelpAbout" )

  frame.Show(True)
</syntaxhighlight>

==References==
{{reflist}}

==External links==
{{Portal|Free Software}}
*[http://wxbasic.net WxBasic website]
*{{sourceforge|wxbasic}}
*[http://wxbasic.sourceforge.net WxBasic Forum]
*[http://wiki.wxwidgets.org/WxBasic_Tutorial WxBasic tutorial]

{{BASIC}}
{{wxWidgets}}

[[Category:Free and open source interpreters]]
[[Category:Free computer libraries]]
[[Category:WxWidgets]]
[[Category:Software that uses wxWidgets]]
[[Category:Software using the GNU Lesser General Public License]]
[[Category:BASIC interpreters]]