problems with ListBox

MorgoZ

Hi all,

i?m trying to make a dynamic list box. I?ve created a listbox button with TPDesign, a DataList dynamically with NetLinx, and i?ve bound them together.
The code is as follows:


BUTTON_EVENT[dvTpiProInicio,1]
{
push:
{

//Creamos el Data List
SEND_COMMAND dvTpiProInicio, "'^LDN-2,1,4,listaPacientes'"
//Establecemos los tipos de datos que contendr?n las columnas (todos texto)
SEND_COMMAND dvTpiProInicio, "'^LDT-1,1,0,0,0,0'"

for(i=1; i<=max_length_array(pacientes); i++)
{
cadena = "pacientes.familyName,' ',pacientes.mothersMaidenName,',',pacientes.name,',',itoa (pacientes.medicalRecordNumber),',',itoa(pacientes.patientAppointment.studyId)"

SEND_COMMAND dvTpiProInicio, "'^LDA-1,0,',cadena"
}

}

"pacientes" is the structure where i save all the data to be displayed.
The ListBox Button has a listPort of 2 and a listAddress of 1

The problem is that when i push the button to load the listBox, at the beginning it shows an empty list; i have to push the list to make it show the data loaded.... why?

The second problem is that i need to refresh the list by pressing another button. To do this i tried to clear the rows with the command

SEND_COMMAND dvTpiProInicio, "'^LDC-1'"

.... and it didn?t work, so i tried to delete all the list with the command

SEND_COMMAND dvTpiProInicio, "'^LDD-1'"

.... and it didn?t work.....

Does someone knows how to manage a ListBox or why is this happening to me?

Many thanks!
Salutes.

MorgoZ

Ok,

i´ve made more tests and i´ve intserted the code:

//Sets the column number (4) to display in the view with address 2
SEND_COMMAND dvTpiProInicio, "'^LVC-2,4'"
//Updates the view at address 2
SEND_COMMAND dvTpiProInicio, "'^LVU-2'"

so now it should update the data..... and it does...... but i have to push the listBox to make the panel refresh it, it doesn´t updates the data loaded at the DataList automatically with the update command, i have to push over the list to make the panel refresh with the new data.

Any advise?

And one last question: could someone explain me the definition of "view address" or the "address of view definition"?? I haven´t found any clear definition about it.


Thanks!!!

snoble

The "view address" is the address set in the Programming properties of the list box button. If it is properly bound to a data list, sending the ^LVU command to the view address should update any changed or added data from the data list that is visible on the view. Based on your follow-up post, I wasn't sure whether the ^LVU command was or was not properly updating the data in your view. But in theory, your should be able to add or modify data in the list using the ^LDA or ^LDL commands, then use ^LVU to have those changes reflected in the view (assuming they are in view).

The key is to keep track of your data list port/address and your view (i.e. list box button) port/address and don't mix them up. Also, if you're defining a data list from scratch (using ^LDN), be sure that you specify the port allocation in TPD4 under "Project Properties", particularly if the port is the highest in use.

MorgoZ

Ok,

now everything is correct.
Thanks for your help!