System() function for the path including blanks.

[pnk003]

Dear Qt developer and experts.

I found that the the system() function does not work when the path including blanks.
Would you check this? I spend a day for this. ^^;

The following code using the path including blanks does not work.

sprintf( buff, " "C:\\Program Files (x86)\\tool\\tool.exe" argument");
system( buff );;

If the path does not have blank, the system() function works well (as follows).

sprintf( buff, "D:\directory\GUI\tool\QC\tool.exe");
system( buff );;

Thank you very much.
I really appreciate to the Qt developers. It the the best tool.

Sincerely Yours,

Ick-Sung Choi.

[p3c0]

Hi,

Do you get into your "buff" variable the expected string that you have passed ? Try printing it.

[mehrdadsilver]

I have this problem too :(

[blueshift]

Use this:
@sprintf(buff, "C:\"Program Files"\CCleaner\CCleaner64.exe"); @

Note the "Program Files" put in quotes using Escape character(")

[pnk003]

Dear experts.
Thank you very much for comment and advices.
Yes. I tried to print the buff string. The string is executed well when I put it in DOS cmd.exe.

I wrote the string to "run.bat" file. and I execute the "run.bat" using system("run.bat").

Thank you blueshift for your advice.
I will try it.

Thank you very much.

Sincerely Yours,

Ick-Sung Choi.

[ChrisW67]

For future reference none of this has anything to do with Qt.

system() is a C/C++ standard library function.
The need to quote paths containing spaces is s function of the command shell that system() launches on your behalf.
The way you escape quotes and backslashes in a C literal string is governed by the C/C++ language.

If you want a Qt equivalent please look at the QProcess class.

[pnk003]

Dear ChrisW67.

Thank you very much for your precious advice.
I am not good at C++ and Qt .
I started to study Qt just a month ago. ^^;

Thank you very much.
Sincerely Yours,

Ick-Sung Choi.

[blueshift]

Yes ChrisW67 is right. It is advisable to use QProcess for what you intend. Calling system() is highly undesirable.
Regards and thanks,
blueshift