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TreeCtrl - how to change images dynamically? [SOLVED + FIXED] [message #2312]

Fri, 07 April 2006 22:20

fudadmin
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Registered: November 2005
Location: Kaunas, Lithuania

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in TreeCtrl
There are methods:

	void   Set(int id, Value value);
	void   Set(int id, Value key, Value value);

but no for images...
How to change images dynamically?
(other than add or insert!!!)

[Updated on: Sun, 09 April 2006 04:39]

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Re: TreeCtrl - how to change images dynamically? [message #2314 is a reply to message #2312]

Sat, 08 April 2006 01:14

fudadmin
Messages: 1321
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fudadmin wrote on Fri, 07 April 2006 21:20

in TreeCtrl
There are methods:

	void   Set(int id, Value value);
	void   Set(int id, Value key, Value value);

but no for images...
How to change images dynamically?
(other than add or insert!!!)

I haven't done a lot of thinking but this works for me:

void  TreeCtrl::Set(int id, const Image& img)
{
	Item& m = item[id];
//	if(m.ctrl) {    //Edit: in fact this dosn't work ?
		m.image = img;
		RefreshItem(id);
//	}
}

If there is no other way, maybe it would be good to have added something like above?
Also, question arises, how to add a series of images?

[Updated on: Sat, 08 April 2006 01:24]

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Re: TreeCtrl - how to change images dynamically? [message #2323 is a reply to message #2314]

Sat, 08 April 2006 12:42

mirek
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Registered: November 2005

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const Node& GetNode(int id) const;
void SetNode(int id, const Node& n);

What do you mean by "series of images"?

Mirek

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Re: TreeCtrl - how to change images dynamically? [message #2331 is a reply to message #2323]

Sat, 08 April 2006 13:00

fudadmin
Messages: 1321
Registered: November 2005
Location: Kaunas, Lithuania

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luzr wrote on Sat, 08 April 2006 11:42

const Node& GetNode(int id) const;
void SetNode(int id, const Node& n);

What do you mean by "series of images"?

Mirek

I had tried this unsuccessfully... That's why I asked.

	tree.SetNode(editid, tree.GetNode(editid).SetImage(CtrlImg::ImgEdit()));

E:\AriUppApps1\ideAris1\main.cpp(26) : error C2662: 'TreeCtrl::Node::SetImage' : cannot convert 'this' pointer from
'const TreeCtrl::Node' to 'TreeCtrl::Node &'

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Re: TreeCtrl - how to change images dynamically? [message #2332 is a reply to message #2323]

Sat, 08 April 2006 13:02

fudadmin
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Registered: November 2005
Location: Kaunas, Lithuania

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luzr wrote on Sat, 08 April 2006 11:42

What do you mean by "series of images"?

Mirek

A row of images e.g Smile

[Updated on: Sat, 08 April 2006 13:02]

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Re: TreeCtrl - how to change images dynamically? [message #2335 is a reply to message #2331]

Sat, 08 April 2006 14:05

mirek
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Registered: November 2005

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fudadmin wrote on Sat, 08 April 2006 07:00

luzr wrote on Sat, 08 April 2006 11:42

const Node& GetNode(int id) const;
void SetNode(int id, const Node& n);

What do you mean by "series of images"?

Mirek

I had tried this unsuccessfully... That's why I asked.

	tree.SetNode(editid, tree.GetNode(editid).SetImage(CtrlImg::ImgEdit()));

E:\AriUppApps1\ideAris1\main.cpp(26) : error C2662: 'TreeCtrl::Node::SetImage' : cannot convert 'this' pointer from
'const TreeCtrl::Node' to 'TreeCtrl::Node &'

Ah... Well, one of rare cases when C++ does not play well...

Try

TreeCtrl::Node n = tree.GetNode(editid);
n.SetImage(CtrlImg::ImgEdit());
tree.SetNode(editid, n);

Thinking about it, it would probably be better here to return Node value instead of constant reference... what do you think? (Constant reference is faster, however in this case it is very likely you are about to change the value in most cases).

MIrek

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Re: TreeCtrl - how to change images dynamically? [message #2337 is a reply to message #2335]

Sat, 08 April 2006 15:09

fudadmin
Messages: 1321
Registered: November 2005
Location: Kaunas, Lithuania

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luzr wrote on Sat, 08 April 2006 13:05

I had tried this unsuccessfully... That's why I asked.

	tree.SetNode(editid, tree.GetNode(editid).SetImage(CtrlImg::ImgEdit()));

E:\AriUppApps1\ideAris1\main.cpp(26) : error C2662: 'TreeCtrl::Node::SetImage' : cannot convert 'this' pointer from
'const TreeCtrl::Node' to 'TreeCtrl::Node &'

Quote:

Ah... Well, one of rare cases when C++ does not play well...

Try

TreeCtrl::Node n = tree.GetNode(editid);
n.SetImage(CtrlImg::ImgEdit());
tree.SetNode(editid, n);

It works this morning... I can't believe it didn't work yesterday Shocked

... Something magic. Maybe I was too tired and did a typo mistake once again somewhere. And I knew about that const... Smile

Anyway, thank you very much for confirming it because I was going mad and suspected bugs everywhere... Smile

And I couldn't understand the reason of not returning Node... but I have not much against const if it works... Laughing

[Updated on: Sat, 08 April 2006 15:11]

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Re: TreeCtrl - how to change images dynamically? [message #2339 is a reply to message #2337]

Sat, 08 April 2006 16:33

mirek
Messages: 14105
Registered: November 2005

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fudadmin wrote on Sat, 08 April 2006 09:09

luzr wrote on Sat, 08 April 2006 13:05

I had tried this unsuccessfully... That's why I asked.

	tree.SetNode(editid, tree.GetNode(editid).SetImage(CtrlImg::ImgEdit()));

E:\AriUppApps1\ideAris1\main.cpp(26) : error C2662: 'TreeCtrl::Node::SetImage' : cannot convert 'this' pointer from
'const TreeCtrl::Node' to 'TreeCtrl::Node &'

Quote:

Ah... Well, one of rare cases when C++ does not play well...

Try

TreeCtrl::Node n = tree.GetNode(editid);
n.SetImage(CtrlImg::ImgEdit());
tree.SetNode(editid, n);

It works this morning... I can't believe it didn't work yesterday Shocked

... Something magic. Maybe I was too tired and did a typo mistake once again somewhere. And I knew about that const... Smile

Anyway, thank you very much for confirming it because I was going mad and suspected bugs everywhere... Smile

And I couldn't understand the reason of not returning Node... but I have not much against const if it works... Laughing

Well, I have changed it to return value instead of reference... so no more confusion there Smile

Mirek

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