Cancels printing and deletes the spool file, if any. There are two syntaxes.
To |
Use |
|---|---|
Cancel printing of a DataWindow or DataStore printed with the Print function. |
|
Cancel a print job that you began with the PrintOpen function. For the PowerBuilder environment only. For a description of PowerBuilder system print commands, see the PowerScript Reference. |
Cancels the printing of a DataWindow or DataStore that was printed using Syntax 1 of Print.
DataWindow type |
Method applies to |
|---|---|
PowerBuilder |
DataWindow control, DataWindowChild object, DataStore object |
Web ActiveX |
DataWindow control, DataWindowChild object |
integer dwcontrol.PrintCancel ( )
number dwcontrol.PrintCancel ( )
Argument |
Description |
|---|---|
dwcontrol |
A reference to a DataWindow control, DataStore object, or child DataWindow. |
Returns 1 if it succeeds and –1 if an error occurs. If dwcontrol is null, PrintCancel returns null.
PrintCancel cancels the printing of the specified DataWindow or DataStore by deleting the spool file, if any, and closing the job.
PowerBuilder environment
When you use the Print method to print
the DataWindow or DataStore, without using PrintOpen,
use Syntax 1 to cancel printing. When you use the PowerScript system
function PrintDataWindow to print a DataWindow
as part of a print job, use Syntax 2 to cancel printing.
When you use Print for DataWindow controls or DataStores, it triggers a PrintStart event just before any data is sent to the printer (or spooler), a PrintPage event for each page break, and a PrintEnd event when printing is complete. You can use PrintCancel in the PrintStart or PrintPage event to cancel printing.
This statement sends the contents of the DataWindow dw_employee to the current printer without displaying the Cancel dialog:
dw_Employee.Print(FALSE)
This statement in the PrintStart event cancels printing:
dw_employee.PrintCancel()
Cancels printing of a print job that you opened with the PrintOpen function. The print job is identified by the number returned by PrintOpen.
DataWindow type |
Method applies to |
|---|---|
PowerBuilder |
DataWindow control |
integer PrintCancel ( long printjobnumber )
Argument |
Description |
|---|---|
printjobnumber |
The number the PrintOpen function assigned to the print job. |
Returns 1 if it succeeds and –1 if an error occurs. If printjobnumber is null, PrintCancel returns null.
PrintCancel cancels the specified print job by deleting the spool file, if any, and closing the job. Because PrintCancel closes the print job, do not call the PrintClose function after you call PrintCancel.
In this example, a script for a Print button opens a print job and then opens a window with a cancel button. If the user clicks on the cancel button, its script sets a global variable that indicates that the user wants to cancel the job. After each printing command in the Print button’s script, the code checks the global variable and cancels the job if its value is true.
The definition of the global variable is:
boolean gb_printcancel
The script for the Print button is:
long job, li
gb_printcancel = false
job = PrintOpen("Test Page Breaks")
IF job < 1 THEN
MessageBox("Error", "Can't open a print job.")
RETURN
END IF
Open(w_printcancel)
PrintBitmap(Job, "d:\PB\bitmap1.bmp", 5, 10, 0, 0)
IF gb_printcancel = true THEN
PrintCancel(job)
RETURN
END IF
... // Additional printing commands,
... // including checking gb_printcancel
PrintClose(job)
Close(w_printcancel)
The script for the cancel button in the second window is:
gb_printcancel = true
Close(w_printcancel)
PrintCancel in the PowerScript Reference
PrintClose in the PowerScript Reference
PrintOpen in the PowerScript Reference
