Control keyword & Optimized Compile

[Scubaticus]

I have a form called Form1 with a label called Label1

Sub Globals
   'Declare the global variables here.

End Sub

Sub App_Start
   lblName = "Main.Label1"
   Control(lblName).Text = "Hello World"
   Form1.Show
   
End Sub

On the desktop it executes normally.
Not optimized compiled (Windows Exe) executes normally
Optimized compiled (Windows Exe) crashes with a message (translated from Dutch so originally it will look a little bit different):

An error occurred on sub __main_app_start
Unable to convert object of type Dbasic.EnhancedControls.CEnhancedLabel to type Dbasic.IText

This was not a problem with the 6.5

 

[agraham]

"Control(lblName, Label)" fixes it although according to the Help->MainHelp->Keyword->Runtime control manipultion->Control it should not be necessary

As of version 6.00, the compiler may ask you to specify the control's or object's type.

The following properties does not require you to specify the type:

Text, Left, Top, Width, Height, Visible, Enabled, Focus, BringToFront, Color, FontColor, FontSize, Refresh, Dispose, Name, Image, Checked, IgnoreKey, SelectionLength, SelectionStart, ScrollToCaret, Multiline and LoadPicture.

Looks like a little bugette crept into 6.80!

 

[Scubaticus]

I tried to fix this problem internally because I use the Control keyword a lot:

Sub App_Start
   lblName = "Mod1.Mod1Label1"
   cType   = ControlType(lblName)
   Control(lblName, cType).Text = "Hello World"
   Mod1.Mod1Form.Show
   
End Sub

But it won't compile this way as 'cType' is not a controltype.
Now i have to recode it into Select Case statements ....

 

[agraham]

But it won't compile this way as 'cType' is not a controltype.

No it won't. It can't be a variable as the compiler needs to know the control type at compile time in order to emit the correct code for the type of control.

 

[Scubaticus]

Ok, I thought I could solve this like:

Sub App_Start
   Name    = "Mod1.Mod1Label1"
   cType   = ControlType(Name)
   Trans   = "Hello World"

   Select cType
   
      Case 'Button'
         Control(Name, Button).Text = Trans
         
      Case 'CheckBox'
         Control(Name, CheckBox).Text = Trans
         
      Case 'Form'
         Control(Name, Form).Text = Trans
         
      Case 'ImageButton'
         Control(Name, ImageButton).Text = Trans

      Case 'Label'
         Control(Name, Label).Text = Trans
         
      Case 'TextBox'
         Control(Name, TextBox).Text = Trans
         
         
   End Select
      
   
   Mod1.Mod1Form.Show
   
End Sub

Guess what? It won't compile either. It gives me the error (again translated from dutch):

Error compiling program.
Error message: The index is outside of range. The index may not be negative and should be smaller than the size of the collection.

Line number: 11
Line: Select cType

 

[agraham]

You may have realised this by now but the problem is that your Case statements use single quotes instead of double quotes and so look like comments to the compiler.

Also note that if you include Control(name, type) referencing a control type you don't have in your program it also won't compile http://www.b4x.com/forum/bug-reports/4486-cs0246-cenhancedcheckbox-compile-error.html

 

[Scubaticus]

Oops...was I sleeping or blinded by the 'Line: Select cType' reference for the error.

Anyway, the names of all my controls with labels comes from a database with the value it should become. This is done for translation purpose.

In 6.5 this wasn't a problem at all. As from 6.8 it seems it's not possible anymore to access a control using a string but I have to use a constant instead?

 

[agraham]

In 6.5 this wasn't a problem at all. As from 6.8 it seems it's not possible anymore to access a control using a string but I have to use a constant instead?

Sorry , I don't understand this. Can you give an example of what used to work and now doesn't?

 

[Erel]

I see this bug too. Thanks.
It will be fixed in the next version.
You can apply the fix by replacing CEnhancedLabel.cs with the one attached.
This file should be located under Tzor folder. By default it is:
C:\Program Files\Anywhere Software\Basic4ppc Desktop\Tzor