Unable to cast Object Treeview.node

[Mr_Gee]

I've checked all the examples on the forum which included treeview, but all examples have the same issue (or appear to have it)

I'm writing an application where the user can select a file (just the path)
I tried to do this with FileOpen but that only allows me access to the memory card, Treeview was the next option, the examples on the forum all have the same problem , they give an error when I try to compile them:
"Unknown control type Use Control (Name,Type) instead"
Line XXX : Control(node).addnewnode (SubString(s,c,StrLength(s)-c))

changing this to Control(node,treeview).addnew....etc.
Seems to solve it in the EDI but when I run the compiled program I get the attached error..
(this is for the desktop version, the ppc version also has errors)

Any help is appreciated

Thanks

[agraham]

You are using the wrong type name I think

try changing to "node"

Control(node,node).addnew....etc.

[Mr_Gee]

Originally Posted by agraham

You are using the wrong type name I think

try changing to "node"

Control(node,node).addnew....etc.

Thanks agraham, but I also tried that, I got a similar error (attached)
I also tried Form, listbox and arraylist but no dice :-(

[agraham]

I think you have probably incorrectly changed a treeview control reference. Treeviews and nodes are different types of object. Look at the Object list in the Project Explorer at the right. You need to use the type name given there after the object name.

For a Node object
Control(node,node).addnew....etc.

For a TreeView object
Control(treeview,treeview).addnew....etc.

[Mr_Gee]

Well thats the weird thing, i didn't change anything from the downloaded application, since i didn't know how to use treeview I downloaded an example
to see if i could figure out how it worked, but when i test the examples they give me errors, i'm trying to find out why so i can use treeview in my own application.

What happens if you try this example from Erel:
Treeview - different pics for nodes?
When I run it using the IDE I get the Controle(node) message...

Do you get the same one?
Otherwise it could be my instalations (Desktop & PPC)

[agraham]

It works for me with this modified code

Sub FindFolders (path, node) 'Finds all folders in a specific path
	WaitCursor(true)
	al1.clear
	DirSearch(al1,path)
	c = StrLength(path)
	For I =0 To al1.count - 1
		s=al1.item(i)
		Control(node, treeview).addnewnode (SubString(s,c,StrLength(s)-c))
	Next
	al1.Clear
	FileSearch(al1,path)
	For I =0 To al1.count - 1
		s=al1.item(i)
		node2.Value = Control(node,treeview).addnewnode (SubString(s,c,StrLength(s)-c))
		node2.ImageIndex = 2
		node2.SelectedImageIndex = 2
	Next
	Control(node,treeview).expandall
	WaitCursor(false)
End Sub

Line 40 errored as "invalid parameter" so I change"expand" to "expandall".

The code is misleading in that the parameter named node is actually a TreeView object! I needed three Control(node, treeview) edits.

[specci48]

Hi guys,

the reason for is error is the "optimized compilation".

During debug in the IDE or without "optimized compilation" basic4ppc casts the objects treeview and node as needed. So the example was always right up to version 5.8.

To speed up the executables with "optimized compilation" () the programmer now has always to declare the right type (treeview or node), even you have to code some routines twice...


specci48

[Mr_Gee]

Well I replaced the sub with your version, the error doesn't show in the IDE,
but after i compile it I get the Treeview.Treeview and Treeview.node error again

[Mr_Gee]

Originally Posted by specci48

Hi guys,

the reason for is error is the "optimized compilation".

Is there a way of "fixing" this or turning it off (just this time)?

[specci48]

You can switch between the "old" and "optimized compilation" with menu File > Compile > Optimized Compilation.

If you do this you should only use one parameter in the control statement: control(node).


specci48