A class for API Created Dynamic Menus


For some controls In my current project, I wanted To be able To display a simple context menu using the Right mouse button.

The solution In plain VB uses an existing menu, which must be extended (at runtime Or at design Time). I found this unacceptable.

Searching the web offered the solution of using the API functions CreatePopupMenu(), TrackPopupMenu() And AppendMenu().

I extended the sample To work With a undetermined number of arguments, thus giving Me the flexibility I needed.

The presented Function Popup() assumes the user wants a context menu at the current mouse pointer location. The argument Array consists of menu items Or separators (presented by a Single dash). The user can Select a menu Item by using either the Left Or Right mouse button. The index of the chosen menu Item Is returned, Or zero If cancelled.

A simple usage of the class module could be : (on a list box)


private Sub List1_MouseUp(Button as Integer, Shift as Integer, _
      x as Single, y as Single)
    Dim oMenu as cPopupMenu
    Dim lMenuChosen as Long
'
    If Button = vbRightButton then
        set oMenu = new cPopupMenu
'
' Pass in the desired menu, use '-' for a separator
'
        lMenuChosen = oMenu.Popup("Menu 1", "Menu 2", "Menu 3", _
                "-", "Menu 4")
'
        Debug.print lMenuChosen
    End If
'
End Sub
'
'

Download Zipped Project File and API Menu Class (3k)



Comments

Leave a Comment
  • Your email address will not be published. All fields are required.

Top White Papers and Webcasts

  • When individual departments procure cloud service for their own use, they usually don't consider the hazardous organization-wide implications. Read this paper to learn best practices for setting up an internal, IT-based cloud brokerage function that service the entire organization. Find out how this approach enables you to retain top-down visibility and control of network security and manage the impact of cloud traffic on your WAN.

  • U.S. companies are desperately trying to recruit and hire skilled software engineers and developers, but there's simply not enough quality talent to go around. In response, companies often resort to inferior solutions -- hiring substandard developers and engineers, recruiting talent on a part-time or temporary basis, poaching people from competitors, or burdening an already stressed IT staff for more of their labor. Fortunately, there's a better solution. Read this white paper to learn the business value of …

Most Popular Programming Stories

More for Developers

RSS Feeds

Thanks for your registration, follow us on our social networks to keep up-to-date