Programming Visual Basic for the Palm OS

AppForge VM Integration

In this section, we integrate the TagParse component into an AppForge project in Visual Basic. We write a simple driver application in Visual Basic and then install it on the Palm.

Create a new AppForge project for the Palm called AFVBClient in the AFVBClient directory (see Figure 9-1, earlier in the chapter). Name the form frmTagParse and add three AFButton controls with the properties from Table 9-10. Figure 9-7 shows how the form should look.

Figure 9-7. AFVBClient form

Table 9-10. AFButton control properties

Name	Caption
btnCountSchema	Count schema
btnCountRecs	Count records
btnExtractData	Extract data

Add a reference for the TagParse to the AFVBClient project. Select Project → References from the main menu and browse to the TagParse_tlb.tlb type library in the ParseServer\Debug directory. The MTagParseLib module reference should now appear as shown in Figure 9-8. Click OK to close this window.

Figure 9-8. AFVBClient project references

Start the form by adding the following initialization code to frmTagParse.

Option Explicit

Dim WithEvents tagParse As CTagParse

In declaring the tagParse variable, we use the WithEvents keyword to indicate that we want to sink events from it.

Next, declare the two event sink methods.

'sink invalid tag pair event ...