Subclassing and Hooking with Visual Basic

The Macro Recorder/Playback Example

This example application looks and operates the same as the example in the previous chapter. The only difference is that we have added two new buttons, hook and unhook, to the PLAYBACK frame. The code in this chapter will concentrate on these new buttons. Figure 20-2 presents a screenshot of this example application.

Figure 20-2. Screenshot of the Macro Recorder/Playback example application

Table 20-1 presents the nondefault properties of the form and its controls.

Table 20-1. Nondefault Properties of the Form and Its Controls

Object Type	Property Name	Property Value
Form	Name	Form2
Form	Caption	“Recorder Application”
Form	Top	420
Form	Left	132
Form	Height	4305
Form	Width	4290
Frame	Caption	“RECORD”
Frame	Name	Frame1
Frame	Top	120
Frame	Left	120
Frame	Height	1335
Frame	Width	1155
Frame	Caption	“PLAYBACK”
Frame	Name	Frame2
Frame	Top	120
Frame	Left	120
Frame	Height	2475
Frame	Width	1815
Frame	Caption	“TEST AREA”
Frame	Name	Frame3
Frame	Top	120
Frame	Left	2220
Frame	Height	2475
Frame	Width	1815
TextBox	Top	240
TextBox	Left	1080
TextBox	Height	315
TextBox	Width	2655
Command Button1	Name	cmdHook
Command Button1	Caption	“hook”
Command Button1	Top	360
Command Button1	Left	300
Command Button1	Height	495
Command Button1	Width	1215
Command Button2 ...