cdbNbCol (Function)

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Accessing a database found on Mobile Device (Pocket PC)

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See also

Functions for handling a CEDB database

cdbNbCol (Function)

In french: cdbNbCol

Returns the number of columns found in the record in memory.

Caution: From Windows Mobile 5, the access to a standard database (tasks, contacts, appointments, ...) can no longer be performed from a Windows application (and therefore from a standard WINDEV application).


	Accessible from the PC	Accessible from the simulator	Accessible from the Mobile Device (Pocket PC)
CDB database	Yes	Yes	Yes
Standard database	No	No	Yes

Example

// Number of columns found in the record in memory?
ResNbCol = cdbNbCol("MyDatabase", "Customer")
Info("The number of columns is: " + ResNbCol)

// Standard "Contacts" database
// Number of columns found in the record in memory?
ResNbCol = cdbNbCol("", cdbContact)
Info("The number of columns is: " + ResNbCol)

Syntax

<Result> = cdbNbCol(<Database> , <Data file>)

<Result>: Integer

Number of columns found in the record in memory,
-1 if an error occurred. To find out the error details, use ErrorInfo.

<Database>: Character string (with quotes)

Name of database that was opened by cdbOpen,
Empty string ("") to handle one of the standard databases found on Mobile Device (tasks, contacts, ...).

<Data file>: Character string (with quotes) or constant

Data file to use. This parameter corresponds to:
the name of data file to use.
the constant corresponding to one of the standard databases:
cdbContact "Contacts" database
cdbTask "Tasks" database
cdbAppointment "Appointments" database
If this parameter corresponds to an empty string (""), cdbNbCol handles the last data file used by the last function for managing the Mobile Device databases (starting with the letters cdb).

Remarks

Accessing a database found on Mobile Device (Pocket PC)

The table below presents the actions that must be performed to access a database found on Mobile Device:


	Database	Standard database (tasks, contacts, appointments, ...)
WINDEV application	Establish a connection between the current computer and the Mobile Device (ceConnect). Open the database to use (cdbOpen).	Establish a connection between the current computer and the Mobile Device (ceConnect).
WINDEV Mobile application	Open the database to use (cdbOpen).	No specific action is required.

Reminder: From Windows Mobile 5, the access to a standard database (tasks, contacts, appointments, ...) can no longer be performed from a Windows application (and therefore from a standard WINDEV application).

Component: wd260ce.dll