forum.vdsworld.com

[jwfv]

I have a program that uses the table element from the VDSList.DLL. It works fine. It displays a list of customers and allows them to be sorted by different columns.

As the list has become larger (now it is at almost 900 names), it takes longer than I would like to resort the list (a few seconds).

I wanted to test the native TABLE element that is in VDS5, but I keep getting strange errors.

The problem occurs when I try to add a row to the table using the LIST ADD command. (LIST ADD, mytable, sometext|somemore)

I get an error in French:

Violation d'acces a l'adresse 0490B844. Lecture de l'addresse FFFFFFFF.

The first hex value varies each time.

I can display a table with no info just fine. Just a problem when I add rows.

My questions:

1.) Does anyone know if the VDS 5 table will be faster to do a Columnsort?

2.) Does anyone have any ideas what could be causing this strange error?

Thanks,

Joe

[Vic D'Elfant]

[jwfv]

Yes, you are right - I don't know why I put that in my example.

But it was not in my program. In my program I just tried to add one column, no @tab() or |.

[CodeScript]

Yeah it is just like Vic said.
I haven't tried large number of items though it appears faster
than VDS list element as most of the things are managed by
the system itself.

[jwfv]

Thanks for the example - it runs well. I even changed it to put in 1800 items or so and it is very fast to resort them. I'll study it to see what I may have wrong in my code.

I wasn't aware of the API call that would allow you to highlight the entire row - is there a message in the forum that lists the API calls that can be used with TABLE elements?

I'll do a search ...

[PGWARE]

CodeScript I noticed you are using @sum, why not just use the values instead? Cuts down on VDS having to interpret and process the sum function>

%X = @SENDMSG(@WINEXISTS(~TABLE1),4150,0,33)

[PGWARE]

Btw heres a whole list of listview message id's that can be used with the api, I'll try to add them shortly into the API reference guide with examples.


LVM_ARRANGE = 4118
LVM_CREATEDRAGIMAGE = 4129
LVM_DELETEALLITEMS = 4105
LVM_DELETECOLUMN = 4124
LVM_DELETEITEM = 4104
LVM_EDITLABEL = 4119
LVM_ENSUREVISIBLE = 4115
LVM_FINDITEM = 4109
LVM_GETBKCOLOR = 4096
LVM_GETCALLBACKMASK = 4106
LVM_GETCOLUMN = 4121
LVM_GETCOLUMNWIDTH = 4125
LVM_GETCOUNTPERPAGE = 4136
LVM_GETEDITCONTROL = 4120
LVM_GETIMAGELIST = 4098
LVM_GETISEARCHSTRING = 4148
LVM_GETITEM = 4101
LVM_GETITEMCOUNT = 4100
LVM_GETITEMPOSITION = 4112
LVM_GETITEMRECT = 4110
LVM_GETITEMSPACING = 4147
LVM_GETITEMSTATE = 4140
LVM_GETITEMTEXT = 4141
LVM_GETNEXTITEM = 4108
LVM_GETORIGIN = 4137
LVM_GETSELECTEDCOUNT = 4146
LVM_GETSTRINGWIDTH = 4113
LVM_GETTEXTBKCOLOR = 4133
LVM_GETTEXTCOLOR = 4131
LVM_GETTOPINDEX = 4135
LVM_GETVIEWRECT = 4130
LVM_HITTEXT = 4114
LVM_INSERTCOLUMN = 4123
LVM_INSERTITEM = 4103
LVM_REDRAWITEMS = 4117
LVM_SCROLL = 4116
LVM_SETBKCOLOR = 4097
LVM_SETCALLBACKMASK = 4107
LVM_SETCOLUMN = 4122
LVM_SETCOLUMNWIDTH = 4126
LVM_SETIMAGELIST = 4099
LVM_SETITEM = 4102
LVM_SETITEMCOUNT = 4143
LVM_SETITEMPOSITION = 4111
LVM_SETITEMPOSITION32 = 4145
LVM_SETITEMSTATE = 4139
LVM_SETITEMTEXT = 4142
LVM_SETTEXTBKCOLOR = 4134
LVM_SETTEXTCOLOR = 4132
LVM_SORTITEMS = 4144
LVM_UPDATE = 4138

[CodeScript]

[jwfv]

I found my problem!

I was switching back and forth between using the EXTLIST commands in VDSLISTS.DLL and the VDS5 TABLE element I was trying to move to.

I REMmed out all the EXTLIST commands except EXTLIST WINDOW (I didn't think it would affect anything.) Well, it does affect things when you attempt to add lines to a table element.


Thanks - I just downloaded the Table Control API and will check it out. I knew I had seen it somewhere, but couldn't remember where. Thanks for the help.

[PGWARE]

Very nice example CodeScript, I didn't notice that example and api help file before ;(

Here are some great api constants -

http://docs.eiffel.com/libraries/wel/reference/consts/


There are tons of messages here with appropriate message id's. I'm taking a look at the http://docs.eiffel.com/libraries/wel/reference/consts/wel_tbm_constants.html - Trackbar messages and will include these as well into the api reference.

[CodeScript]

Hi Prakash
I will take a look at those.
BTW if anyone wants I had put up collection of more than 50,000 (I think around 54 thousand) API constants in VDS syntax in a searchable form.
There are some minor corrections/a few more additions needed but it is sufficent for most API work.
http://www.vdsworld.com/index.php?page=download&fileid=332
Needs VDS 5 Runtime if VDS 5 is not installed on the system:
http://codescript.vdsworld.com/VDS5src/vdsrun50.dll

[PGWARE]

It seems the message LVM_SETEXTENDEDLISTVIEWSTYLE you found is quite nice, it allows multiple styles to be attributed to the list view, for instance -

%X = @SENDMSG(@WINEXISTS(~TABLE1),@SUM($1000,54),0,61)

Causes the listview to have a checkbox infront of each item, causes hottracking, and the ability to move columns. I kept changing the last digit from (0 - 61) to get different styles, it seems that the last digit can keep going up with many different styles.

[jwfv]

Is there a way to go to AND show a particular row in a table?

For instance, I have a search button on the dialog. It allows the user to type in a name to search for, and then I use @match() to find that value in the TABLE. (For large tables this is easier than scrolling through the names.)

It works fine in my program except that it doesn't move the table list to display the new selection. If I scroll down to it, it is highlighted, but the list doesn't move to show it.

[CodeScript]

[PGWARE]

JWFV try this :