Small Basic Program Conversion to C#

[litdev]

Hi JR, 

Tricky, you are right.  We can see that it occurs on 5 lines where events are set.  SmallBasicCallback is a delegate to a function (basically a variable that is actually a function).  m_onmenu is a variable (Primitive) and onmenu is the function we actually want.  Why it has called it m_onmenu is odd, but you can see in your original SB code you have used the same name OnMenu for the event subroutine AND a variable.

Code:

'Events Enabled
LDControls.MenuClicked = OnMenu
LDShapes.ShapeEvent=OnShapeEvent
GraphicsWindow.KeyDown=OnKeyDown
Controls.ButtonClicked=OnButtonClicked
LDShapes.SetShapeEvent(tb[0])
Controls.Texttyped=OnTextTyped
While "True"
  If OnMenu = "True" Then
...
Sub OnMenu 'Setup Menu
  OnMenu="True"
EndSub

The fix is probably use separate variable for variable and subroutine name in SB, or in the C# change to use the delegate function name (without the m_).

Code:

        LDControls.MenuClicked += _SmallBasicProgram.onmenu;
        LDShapes.ShapeEvent += _SmallBasicProgram.onshapeevent;
        GraphicsWindow.KeyDown += _SmallBasicProgram.onkeydown;
        Controls.ButtonClicked += _SmallBasicProgram.onbuttonclicked;
        LDShapes.SetShapeEvent(Primitive.GetArrayValue(tb, 0.0));
        Controls.TextTyped += _SmallBasicProgram.ontexttyped;

So, it does make sense!

If I didn't spot this, my next step would be to test a very simple SB event program and see what it looked like decompiled:

Code:

GraphicsWindow.MouseDown = OnMouseDown

Sub OnMouseDown
EndSub