pb函数库之打印函数(国外英文资料).docVIP

pb函数库之打印函数(国外英文资料) The print function of the Pb function library Print () Function to print one or more lines of text in an open print job with the current font. Syntax Print (printjobnumber, {tab1,}string{, tab2}) The parameters of printjobnumber: PrintOpen () function to open the print job tab1:Integer type options, specify the text to start printing position, will print the cursor to the position before the print string, from printing to the left circle calculation with 1/1000 inch units. If the cursor is at the specified location, print or print the cursor has exceeded the specified location, or omit the parameter, then Print () function from the current position of the cursor to print print string:string type, the specified string to be printed. If the string including the newline character (~r~n), then the string will be divided into lines of output, but in addition to the first line, ignoring the other tab1 parameter specifies the starting position of print tab2:Integer type option, the specified string after printing print cursor move to the position, from print to the left circle the calculation, with 1/1000 inch units. If the print cursor has exceeded the specified location, the Print () function ignores the argument, and the print cursor is at the tail of the printed string. If this parameter is omitted, the Print () function moves the print cursor to the starting position of the next line. Return value Integer. When the function succeeds, it returns 1 and returns -1 when an error occurs. If any parameter has a value of NULL, the Print () function returns NULL. Usage in print job, PowerBuilder uses print cursor to trace print position. The print cursor holds the coordinates in the upper left corner of the upcoming printing area. After you print the text using the Print () function, the PowerBuilder automatically updates the print cursor. PowerBuilder uses line spacing to determine the distance between two lines of printed text. The line spacing is proport