Question

I’m making a very simple game application. The main form (Form1) has a single button on it labeled Button1. (very creative naming, eh?) The point of the application is to move the button in random directions across the form. My problem is that when I start debugging (I’m using Visual Studio 2010) the form never shows up, and when I open Windows Task Manager the name of my .exe never shows up in the process list. I was wondering if the code I’m using would have something to do with that. Here’s my code:

Class Form1  
    Private Sub Form1_Load(...)  
       InitializeComponent()  
       While True
           MoveIt()  
       End While
    End Sub  
    Sub MoveIt()  
       Dim rand As Short  
       Randomize()  
       rand = (Rnd() * 5)  
       Select Case rand  
           Case 0  
               'move button up 5px  
               Button1.Top -= 5  
           Case 1  
               'move button up 5px  
               Button1.Top -= 5  
           Case 2  
               'move button left 5px  
               Button1.Left -= 5  
           Case 3  
               'move button right 5px  
               Button1.Left += 5  
           Case 4  
               'move button down 5px  
               Button1.Top += 5  
           Case 5  
               'move button down 5px  
               Button1.Top += 5  
       End Select  
    End Sub  
End Class          

Answer 1

Yes, your code has something to do with this. You have an endless While loop in your form’s Load event, which means the Load event never returns, which means your form basically never finishes loading.

Instead of calling this from your Load event, trigger the start of the random-button-movement process by using BeginInvoke from your Load event:

http://msdn.microsoft.com/en-us/library/a06c0dc2.aspx