Board index » Visual Studio » still fighting with VB6 now Checkboxes in a TreeView Control???

Quote

Hi



I'm still on VB6.



What I'm trying to implement is similar functionality

as the tree view used (for example) in Microsoft Backup

(from Win98).



I have it working good with checkboxes, icons for open

and closed dir's ect.

Now all I want to do (and I'd be soo happy...!), is to be

able to dim the checkboxes higher up in the tree when

one lower down is checked (like Backup does).



eg.

Check a box and all boxes below it are checked, and

all boxes upwards towards the root in the chain become

'dimly checked' showing partial selection of those

particular nodes.



I can't find any means of isolating one node in the tree

and causing the 'checks' to be dimmed or change color.

Properties provided such as ForeColor, Bold ect. do not

act on the boxes.



Any body have any ideas??

I'm not worried about the logic for the tree, only getting

hold of a reference to the Node object's checkbox and

changing its color.



I realize it could be complicated, so just send me in

the right direction, assuming of course it's even possible.



Hate to have to start building a tree from scratch just to get

the ability to individualy dim a checkbox.



David Otte







-

Quote

Hi



I'm still on VB6.



What I'm trying to implement is similar functionality

as the tree view used (for example) in Microsoft Backup

(from Win98).



I have it working good with checkboxes, icons for open

and closed dir's ect.

Now all I want to do (and I'd be soo happy...!), is to be

able to dim the checkboxes higher up in the tree when

one lower down is checked (like Backup does).



eg.

Check a box and all boxes below it are checked, and

all boxes upwards towards the root in the chain become

'dimly checked' showing partial selection of those

particular nodes.



I can't find any means of isolating one node in the tree

and causing the 'checks' to be dimmed or change color.

Properties provided such as ForeColor, Bold ect. do not

act on the boxes.



Any body have any ideas??

I'm not worried about the logic for the tree, only getting

hold of a reference to the Node object's checkbox and

changing its color.



I realize it could be complicated, so just send me in

the right direction, assuming of course it's even possible.



Hate to have to start building a tree from scratch just to get

the ability to individualy dim a checkbox.



David Otte







-

Quote

nevermind my last post, sorry, I didn't read far enough.



"David" wrote:



>Hi

>

>I'm still on VB6.

>

>What I'm trying to implement is similar functionality

>as the tree view used (for example) in Microsoft Backup

>(from Win98).

>

>I have it working good with checkboxes, icons for open

>and closed dir's ect.

>Now all I want to do (and I'd be soo happy...!), is to be

>able to dim the checkboxes higher up in the tree when

>one lower down is checked (like Backup does).

>

>eg.

>Check a box and all boxes below it are checked, and

>all boxes upwards towards the root in the chain become

>'dimly checked' showing partial selection of those

>particular nodes.

>

>I can't find any means of isolating one node in the tree

>and causing the 'checks' to be dimmed or change color.

>Properties provided such as ForeColor, Bold ect. do not

>act on the boxes.

>

>Any body have any ideas??

>I'm not worried about the logic for the tree, only getting

>hold of a reference to the Node object's checkbox and

>changing its color.

>

>I realize it could be complicated, so just send me in

>the right direction, assuming of course it's even possible.

>

>Hate to have to start building a tree from scratch just to get

>the ability to individualy dim a checkbox.

>

>David Otte

>

>

>

-

Quote

I believe the only way to do this with the common dialog treeview is

through

subclassing. You might be able to find an example on

www.vbaccelerator.com.

We had a similar dilemma at my office and decided just to make the

treenode

text bold when a child item was checked.

Quote

Hope that helps,



Jeff Beem



"Charlie" wrote:



>nevermind my last post, sorry, I didn't read far enough.

>

>"David" wrote:

>

>>Hi

>>

>>I'm still on VB6.

>>

>>What I'm trying to implement is similar functionality

>>as the tree view used (for example) in Microsoft Backup

>>(from Win98).

>>

>>I have it working good with checkboxes, icons for open

>>and closed dir's ect.

>>Now all I want to do (and I'd be soo happy...!), is to be

>>able to dim the checkboxes higher up in the tree when

>>one lower down is checked (like Backup does).

>>

>>eg.

>>Check a box and all boxes below it are checked, and

>>all boxes upwards towards the root in the chain become

>>'dimly checked' showing partial selection of those

>>particular nodes.

>>

>>I can't find any means of isolating one node in the tree

>>and causing the 'checks' to be dimmed or change color.

>>Properties provided such as ForeColor, Bold ect. do not

>>act on the boxes.

>>

>>Any body have any ideas??

>>I'm not worried about the logic for the tree, only getting

>>hold of a reference to the Node object's checkbox and

>>changing its color.

>>

>>I realize it could be complicated, so just send me in

>>the right direction, assuming of course it's even possible.

>>

>>Hate to have to start building a tree from scratch just to get

>>the ability to individualy dim a checkbox.

>>

>>David Otte

>>

>>

>>

Quote

"Jeff Beem" <JeffBeem@discussions.microsoft.com>wrote in message

news:4810291E-AF50-40EB-BD86-5690BB81CC90@microsoft.com...

>I believe the only way to do this with the common dialog treeview is

through

>subclassing. You might be able to find an example on

www.vbaccelerator.com.

>We had a similar dilemma at my office and decided just to make the

treenode

>text bold when a child item was checked.



That's exactly the same bottom line I came to as well.......

(just still kinda bugs me when I can't make it do what I want

though.......)



Oh well..... I guess it'll be back to a couple of months digging around

in VB subclassing.....



Thanks for the reply.



David



>

>Hope that helps,

>

>Jeff Beem

>

>"Charlie" wrote:

>

>>nevermind my last post, sorry, I didn't read far enough.

>>

>>"David" wrote:

>>

>>>Hi

>>>

>>>I'm still on VB6.

>>>

>>>What I'm trying to implement is similar functionality

>>>as the tree view used (for example) in Microsoft Backup

>>>(from Win98).

>>>

>>>I have it working good with checkboxes, icons for open

>>>and closed dir's ect.

>>>Now all I want to do (and I'd be soo happy...!), is to be

>>>able to dim the checkboxes higher up in the tree when

>>>one lower down is checked (like Backup does).

>>>

>>>eg.

>>>Check a box and all boxes below it are checked, and

>>>all boxes upwards towards the root in the chain become

>>>'dimly checked' showing partial selection of those

>>>particular nodes.

>>>

>>>I can't find any means of isolating one node in the tree

>>>and causing the 'checks' to be dimmed or change color.

>>>Properties provided such as ForeColor, Bold ect. do not

>>>act on the boxes.

>>>

>>>Any body have any ideas??

>>>I'm not worried about the logic for the tree, only getting

>>>hold of a reference to the Node object's checkbox and

>>>changing its color.

>>>

>>>I realize it could be complicated, so just send me in

>>>the right direction, assuming of course it's even possible.

>>>

>>>Hate to have to start building a tree from scratch just to get

>>>the ability to individualy dim a checkbox.

>>>

>>>David Otte

>>>

>>>

>>>







-

Quote

That's exactly the same bottom line I came to as well.......

(just still kinda bugs me when I can't make it do what I want

though.......)



Oh well..... I guess it'll be back to a couple of months digging around

in VB subclassing.....



Thanks for the reply.



David

Quote

this might interest you (careful of line-wrap):





www.vbaccelerator.com/home/VB/Code/Controls/TreeView/Hierarchy_Selector_Control/article.asp">www.vbaccelerator.com/home/VB/Code/Controls/TreeView/Hierarchy_Selector_Control/article.asp





.... well.....I'll be damned!

Quote

Jeff Beem





"David" wrote:



>

>"Jeff Beem" <JeffBeem@discussions.microsoft.com>wrote in message

>news:4810291E-AF50-40EB-BD86-5690BB81CC90@microsoft.com...

>>I believe the only way to do this with the common dialog treeview is

>through

>>subclassing. You might be able to find an example on

>www.vbaccelerator.com.

>>We had a similar dilemma at my office and decided just to make the

>treenode

>>text bold when a child item was checked.

>

>That's exactly the same bottom line I came to as well.......

>(just still kinda bugs me when I can't make it do what I want

>though.......)

>

>Oh well..... I guess it'll be back to a couple of months digging around

>in VB subclassing.....

>

>Thanks for the reply.

>

>David

>

>>

>>Hope that helps,

>>

>>Jeff Beem

>>

>>"Charlie" wrote:

>>

>>>nevermind my last post, sorry, I didn't read far enough.

>>>

>>>"David" wrote:

>>>

>>>>Hi

>>>>

>>>>I'm still on VB6.

>>>>

>>>>What I'm trying to implement is similar functionality

>>>>as the tree view used (for example) in Microsoft Backup

>>>>(from Win98).

>>>>

>>>>I have it working good with checkboxes, icons for open

>>>>and closed dir's ect.

>>>>Now all I want to do (and I'd be soo happy...!), is to be

>>>>able to dim the checkboxes higher up in the tree when

>>>>one lower down is checked (like Backup does).

>>>>

>>>>eg.

>>>>Check a box and all boxes below it are checked, and

>>>>all boxes upwards towards the root in the chain become

>>>>'dimly checked' showing partial selection of those

>>>>particular nodes.

>>>>

>>>>I can't find any means of isolating one node in the tree

>>>>and causing the 'checks' to be dimmed or change color.

>>>>Properties provided such as ForeColor, Bold ect. do not

>>>>act on the boxes.

>>>>

>>>>Any body have any ideas??

>>>>I'm not worried about the logic for the tree, only getting

>>>>hold of a reference to the Node object's checkbox and

>>>>changing its color.

>>>>

>>>>I realize it could be complicated, so just send me in

>>>>the right direction, assuming of course it's even possible.

>>>>

>>>>Hate to have to start building a tree from scratch just to get

>>>>the ability to individualy dim a checkbox.

>>>>

>>>>David Otte

>>>>

>>>>

>>>>

>

>

>

Quote

"David" <nodeo@sk.sympatico.ca>wrote in message

news:420afdb6$0$10017$45beb828@newscene.com...

>

>That's exactly the same bottom line I came to as well.......

>(just still kinda bugs me when I can't make it do what I want

>though.......)

>

>Oh well..... I guess it'll be back to a couple of months digging around

>in VB subclassing.....

>

>Thanks for the reply.

>

>David



You can always dump the icons you're currently using, along with the

treeview checkboxes and create some icons that look like checkboxes

(including one that's "dimmed") and use those for checkboxes.... or, use

the

same control that the backup app does.... which is a SysTreeview32. There

should be some code out there somewhere to do that.

Quote

Quote

>

.... well.....I'll be damned!

I can't get the thing to compile (or even load the project) but that's par

for the course for me. I'll

get it with a bit of work, but they included a test .exe with the source,

and that works, so I can see

what it does.



The code is pretty complex. Apparantly they create an image and overlay

it

Quote

"David" <nodeo@sk.sympatico.ca>wrote in message

news:420c5243$0$12314$45beb828@newscene.com...

>>

>.... well.....I'll be damned!

>I can't get the thing to compile (or even load the project) but that's

par

>for the course for me. I'll

>get it with a bit of work, but they included a test .exe with the

source,

>and that works, so I can see

>what it does.

>

>The code is pretty complex. Apparantly they create an image and overlay

>it



There's a *lot* of great code on that site. The "trick" to getting stuff

to

run there is to make sure that all dependencies are present and registered

first. Since his subclasser uses the Implements keyword, if it's missing

or

not registered, VB takes forever and a day to load the project and (try

to)

resolve the problem. It also looks like you need the OleGuids.Tlb typelib

to

work with the control in the IDE (doesn't say so but it's fairly common in

his samples and it's listed in the Related section)



The good news is.... once you get a hand full of his dependencies tucked

away in a folder somewhere and registered, the samples load and run great

with very few problems.

Quote

One thing about his subclasser. There are several

components there that require his VB5 version so you might as well grab

that

and make sure it's registered as well. Once you load the code, you can

reset

the references to the VB6 version if you want.



One last thing about samples there... if you want to do the work, you can

incorporate the subclasser and any other component there, directly into

your

project so there's no external dependencies. That should be the last step

though because subclassers tend to crash in the IDE.... which is why

having

a separate dll is better for the majority of the development work.



--

Ken Halter - MS-MVP-VB - www.vbsight.com">www.vbsight.com

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