A quick course of making scriptable program, Like the VBA (Very Cool!)
Scriptable make everything possible possible Have you ever use the VBA in Microsoft Office? Making your application scriptable can enable it's functions to be extent to infinite, by the End Users. End Users can "WRITE PROGRAM ON YOUR PROGRAM", and run it as they like. It sounds interesting?
AI
Riepilogo AI: This codebase represents a historical implementation of the logic described in the metadata. Our preservation engine analyzes the structure to provide context for modern developers.
Codice sorgente
<p>A quick course of making <font size="4"><b>scriptable</b></font> program, Like the VBA <b>(Very Cool!)</b></p> <p align="center"><b><font face="Arial" color="#000080">Scriptable make everything possible possible</font></b></p> <p>Have you ever use the VBA in Microsoft Office? Making your application scriptable can enable it's functions to be extent to infinite, by the End Users. End Users can "WRITE PROGRAM ON YOUR PROGRAM", and run it as they like. It sounds interesting?</p> <p>@</p> <p>This is a quick course teaching you how to make you application scriptable, using Microsoft Scripting Control.</p> <hr> <p align="center"><b><font face="Arial" color="#000080">Understanding Microsoft Scripting Control</font></b></p> <p>This is a free gift come together with Visual Basic. It support VBScript and JScript. But for convinence, I will use VBScript for demonstration. </p> <p>It is very easy to use. Let's say we have a script control SC</p> <p><font color="#000080">Private</font> <font color="#000080"> Sub</font> Command1_Click()<br> <br> <font color="#000080"> </font> <font color="#000080">Dim</font> strProgram <font color="#000080"> As</font> String<br> </p> <blockquote> <p> strProgram = "Sub Main" & vbCrLf & _<br> "MsgBox ""Hello World""" & vbCrLf & _<br> "End Sub"<br> <br> sc.language = "VBScript"</p> <p><br> sc.addcode strProgram<br> sc.run "Main"</p> </blockquote> <p><br> <font color="#000080">End Sub</font></p> <p>A message box will appear when you press Command1. The code is in VBScript format(*) and can be enter by any method you like, said TextBox. This enable end-users entering their own VBScript code they like, and run them. It just like another Visual Basic!</p> <p>(* The main difference is that the only varible type is viarant. e.g. Dim a,b,c but NOT Dim a as string)</p> <p>So, what can you do to make your application scriptable, extentable?</p> <hr> <p align="center"><b><font face="Arial" color="#000080">Program Overview</font></b></p> <p>Now, right click on the controls list and add a reference to "Microsoft Script Control 1.0". Create one on a form.</p> <table border="1" cellpadding="0" cellspacing="0" width="100%"> <tr> <td width="50%" align="center"><font color="#000080">Name</font></td> <td width="50%" align="center"><font color="#000080">Type</font></td> </tr> <tr> <td width="50%">SC</td> <td width="50%">Microsoft Script Control</td> </tr> <tr> <td width="50%">Form1</td> <td width="50%">Form</td> </tr> <tr> <td width="50%">Text1</td> <td width="50%">TextBox1</td> </tr> <tr> <td width="50%">txtCode</td> <td width="50%">TextBox</td> </tr> <tr> <td width="50%">txtCommand</td> <td width="50%">TextBox</td> </tr> <tr> <td width="50%">lstProcedures</td> <td width="50%">ListBox</td> </tr> <tr> <td width="50%">CmdRun</td> <td width="50%">Command Button</td> </tr> </table> <p>@</p> <p>The Text1 is used as an object that is the "Scriptable" part. In this program, end users can enter Visual Bascis SCRIPT code in txtCode. They may run the code by entering command lines in txtCommand, and press CmdRun.</p> <hr> <p align="center"><font color="#000080" face="Arial"><b>The main part</b></font></p> <p>There is a AddObject function in the script control. You can add any object, controls, like textbox, forms, buttons and picture box into the script control, and give them a "scripting name", i.e. the name used to identify the object in the end-users code.</p> <p><font color="#000080">Private</font> Form_Load</p> <p>sc.AddObject "MyText", Text1</p> <p><font color="#000080">End Sub</font></p> <p>After add the Text1 into the script control, you can access the Text1 in the End-users code that is entered in the txtCode.</p> <p>e.g.</p> <p>In the txtCode, enter the following code:</p> <p><i><b>Sub Main</b></i></p> <p><i><b> Msgbox MyText.Text</b></i></p> <p><i><b>End Sub</b></i></p> <p>Also add the following code to the program(Not the textbox)</p> <p><font color="#000080">Private Sub</font> CmdRun_Click</p> <p> sc.run "Main"</p> <p><font color="#000080">End Sub</font></p> <p><font color="#000080">Private Sub</font> sc_Error()</p> <p> MsgBox "Error running code: " & SC.Error.Description & vbCrLf & "Line:" & SC.Error.Line</p> <p><font color="#000080">End Sub</font></p> <p>When you click the CmdRun, the code in the txtCode Sub Main section will be run. Now you can see the how easy to control the program by end-uses code. The "Msgbox ..." can be replace by any logical VBScript code. E.g. if you entered MyText.visible=False, the textbox will disappear.</p> <p>Similarly, you can AddObject of any controls and object you like into script control and control it totally by end-users code. This is the basis of making scriptable application.</p> <p>Futhermore, the script control provide the procedures object so that you can get all information of the procedures of your code.</p> <p><font color="#000080">Private Sub</font> txtCode_Change</p> <p><font color="#000080"> On Error Resume Next</font></p> <p> lstProcedures.Clear</p> <p> <font color="#000080">Dim</font> i <font color="#000080">as</font> integer</p> <p> <font color="#000080">For</font> i=1 <font color="#000080">to</font> sc.Procedures.Count</p> <p> lstProcedures.Additem sc.Procedures(i)</p> <p> <font color="#000080">Next</font> i</p> <p><font color="#000080">End Sub</font></p> <p><font color="#000080">Sub</font> ExecuteCommand(Str <font color="#000080">As</font> string)</p> <p> <font color="#000080"> On Error Goto</font> 1</p> <p> sc.ExecuteStatement Str</p> <p><font color="#000080">Exit Sub</font></p> <p>1</p> <p>Msgbox Error</p> <p><font color="#000080">End Sub</font></p> <p>For the ExecuteCommand, your can enter a correct statement to execute like:</p> <p>Msgbox MyText.Text</p> <p>Main</p> <p>MyProcedures Arg1,Arg2</p> <p>Msgbox MyFunction(Arg1, Arg2, Arg3)</p> <hr> <p align="center"><font color="#000080" face="Arial"><b>Demonstration Program</b></font></p> <p>And by now, you may be able to create your scriptable program, or make a scripting console for your application. </p> <p>Here is my demonstration program, my Page Creator 3. I don't like to write just a simple program. </p> <p>On the Left hand Outlook bar, click on the PCScript Console to open the console panel. Open a template by clicking open. After entering your own code you like, return the main program or the HTML Code Editor. Find the tab "PCScript" on the floating toolbox. There is a command window. Just type the command in the textbox and click return key to execute it. Have Fun!</p> <p>Kenny Lai</p> <p>Download Demonstration:</p> <p><a href="http://student.mst.edu.hk/~s9710050/Page%20Creator%203.zip">http://student.mst.edu.hk/~s9710050/Page Creator 3.zip</a></p> <p>@</p>
Commenti originali (3)
Recuperato da Wayback Machine