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Gantt Chart Platform Version 2
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Submitted on: 12/5/2009 8:26:55 AM
By: Anele Mbanga
Level: Advanced
User Rating:
By 2 Users
Compatibility:VB 6.0
Users have accessed this code 3677 times.
| (About the author) |
| | | This is a gantt chart platform that I am working on. I have been looking for a gantt chart which is open source to no avail that I can easily customize. This is just the start, thus the platform. Please feel free to contribute. This demonstrates the following: subclassing listview, detect horizontal scrollbar movement, synchronize horizontal scroll bar movement, listview header tooltip, working days between two dates, addition of holidays, flat listview column header, freezing windows updates, highlighting multiple listview columns, sundays between two dates, saturdays between two dates, searching collections. Please contribute and enjoy. This version now boasts the color drawings to show progress between planned and worked until / actual. I need to only show horizontal grid lines and would appreciate any feedback on that. This is still a work in progress.
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| Other User Comments |
 11/20/2009 6:56:07 AM: The_Jokez
Hi
Got problem :
In IDE creation mode, when flying over your UserControl grid with the mouse, IDE have hard job, I don't know what it does ...
When clicking on the grid, sometime, a loop with no DoEvents may turn and turn ... IDE goes mad, not responding.
HighLight columns doesn't work.
Is your UserControl is a grid generator or can it draw Gantt bars ? (I don't see that)
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11/23/2009 3:07:54 AM: Anele Mbanga
Hi, this control is currently a work in progress thus "platform", I am still working on the vertical bars and tasks linkages etc and would appreciate any contributions in doing that too. The system through subclassing detects mouse movements when you move the mouse over the listview control, thus you might experience flickering of the screen in IDE mode. I will add a detect IDE state in the next release to disable the subclassing when in IDE mode. However this should work perfectly in vb6 with the latest service pack.
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12/2/2009 1:55:48 PM: Eric James
hi there, you are doing very good job, please email me when you do any progress, tks, Eric
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12/5/2009 1:03:30 PM: NoName
Glad to see a VB6 version of this in addition to The VB.net one on this site. Great code so far. 5*
I would prefer to have the "hide/show" menu as a checkmark style as used in VB prog environment - menu/view. But that's just my personal preference.
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12/7/2009 5:24:11 AM: T.Jackson
I don't seem to be able to run this. All these missing libraries.
Why the hell are you using $ to denote strings for in this day and age?
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12/7/2009 9:32:02 PM: T.Jackson
Yeah I see what you mean. Zillion lines of code for a no where near completed project. Some of it puzzling too. (copy & paste?)I can understand a programmer not using the limited OOP abilities of VB6 (no use of classes), but in VB.net there's no excuse. I think that a Gantt Chart project is a great idea.
Fantastic clarity and coding, I finally managed to get it to RUN. This is an absolutely brilliant submission. 5*
Easy greasy.
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12/9/2009 7:28:05 PM: Anele Mbanga
In response to T.Jackson and the use of $ for my strings. Please note that is not on declarations but on function calls. If you use Trim instead of Trim$, the result becomes a variant expression slowing the application thus my use of Trim$ etc to clearly define it. This is some tip I got on speeding applications from the net.
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12/11/2009 12:23:25 AM: Mike Morrow
Yes, always use MID$, TRIM$, UCase$, LCase$, Format$ and anything else that should return a string to save processing time converting Variants.
Another Variant sticky point in VB.
Dim asdf, zxcv as long
only makes one long (zxcv). asdf is a Variant and takes extra conversion time going to Long every use.
Mike
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12/15/2009 12:04:01 PM: T.Jackson
That's is puzzling, because they're all string function to begin with. MID deals with strings only. So does UCASE etc ... etc ...
Willing to bet it's an effort to give some degree of backwards compatibility to QBASIC programs. But hey, I could be DEAD wrong. I know about 50% of VB6 at most.
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12/15/2009 12:15:20 PM: T.Jackson
Your argument is I guess that these string functions automatically assume a variant type with out the $, even if the typecasting is correct.
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