There are some Windows command line statements that allow one to (i) identify the current Windows default printer (as well as other printers associated with a PC) and (ii) change the default to a different printer.
A program can use SHELL statements in QB64 to execute those operating system commands. See the following examples provided by forum member DonW:
- This code issues the command to display a PC’s list of printers and routes the output to a text file:
SHELL _HIDE "CMD /C" + "wmic printer get name,default > default.txt"
A sample of the contents of the resulting file is as follows. Notice that the default printer is listed as “TRUE”:
Default Name FALSE Microsoft XPS Document Writer TRUE HP Photosmart C7200 series FALSE HP Officejet Pro 8600 FALSE Fax
- Here is the code to set the default printer to the “HP Officejet Pro 8600” listed in the sample above:
SHELL _HIDE "CMD /C" + "wmic printer where name='HP Officejet Pro 8600' call setdefaultprinter"
Then running the get default SHELL code again, we see the following contents of the text file:
Default Name FALSE Microsoft XPS Document Writer FALSE HP Photosmart C7200 series TRUE HP Officejet Pro 8600 FALSE Fax
- These SHELL commands work in Windows XP, 7, 8.1 and 10.
- [http://www.computerhope.com/wmic.htm Windows WMI commands]
- [http://www.cups.org/documentation.php/options.html Linux Printer Commands]