Otherwise, old behavior is to see if the first character isĪ quote character and if so, strip the leading character and the string between the two quote characters is the nameĢ. Where special is one of: there are one or more whitespace characters between the no special characters between the two quote characters, If all of the following conditions are met, then quote characters The switch is processed as a command line, where the following logic isġ. Here's a snipped from cmd /? If /C or /K is specified, then the remainder of the command line after
'C:\Program' is not recognized as an internal or external command, operable program or batch file.Ĭ:\>C:\Windows\System32\cmd.exe /C "C:\Program Files (x86)\gs\uninstgs.exe C:\Program Files (x86)\gs\gs8.63\uninstal.txt"Ĭ:\>C:\Windows\System32\cmd.exe /C "C:\Program Files (x86)\gs\uninstgs.exe" \"C:\Program Files (x86)\gs\gs8.63\uninstal.txt\"Ĭ:\>C:\Windows\System32\cmd.exe /C "C:\Program Files (x86)\gs\uninstgs.exe" "\"C:\Program Files (x86)\gs\gs8.63\uninstal.txt\""Ĭ:\>C:\Windows\System32\cmd.exe /C "C:\Program Files (x86)\gs\uninstgs.exe" ""C:\Program Files (x86)\gs\gs8.63\uninstal.txt""Ĭ:\>C:\Windows\System32\cmd.exe /C "C:\Program Files (x86)\gs\uninstgs.exe" """C:\Program Files (x86)\gs\gs8.63\uninstal.txt"""Ĭ:\>C:\Windows\System32\cmd.exe /C "C:\Program Files (x86)\gs\uninstgs.exe" ^"C:\Program Files (x86)\gs\gs8.63\uninstal.txt^"Ĭ:\>C:\Windows\System32\cmd.exe /C "C:\Program Files (x86)\gs\uninstgs.exe" "^"C:\Program Files (x86)\gs\gs8.63\uninstal.txt^""įunny that cmd.exe actually contains the answer. These do not work: C:\>C:\Windows\System32\cmd.exe /C "C:\Program Files (x86)\gs\uninstgs.exe" "C:\Program Files (x86)\gs\gs8.63\uninstal.txt" If I try to run this via CMD /C, I found no way to coerce CMD.EXE to pass a quoted string as parameter to the exe file. The command, when run from the prompt, works fine, but needs quoting for its parameter: C:\>"C:\Program Files (x86)\gs\uninstgs.exe" "C:\Program Files (x86)\gs\gs8.63\uninstal.txt"
#Cmd c quotes windows#
I hope your can explain for me, or give me any document link I will learn it by myself.I'm trying to run a command from Perl, using Windows 7's CMD /C. This method makes all argument have double-quotes or have no double-quotes, but is useful.Īlthough my Qt program works successfully, I still can not figure out how QProcess::start() works.
#Cmd c quotes code#
However these code is useful too!!! QProcess *cmd = new QProcess(this) Īrgv.append(QString("concat:%1").arg(compaxList.join("|"))) QString cmdArgv = QString("ffmpeg.exe -i \"concat:%1\" -acodec copy %2").arg(fileList.join("|")).arg(savePath) Ībove all, the second argument has a pair of double-quotes as part of itself. > ffmpeg.exe -i concat:file1.mp3|file2.mp3 -acodec copy out.mp3Īnd try these code(have \") in Qt code, it is useful: QProcess *cmd = new QProcess(this) I try this command in Windows cmd.exe(without double-quotes in second argument), it is useless :
#Cmd c quotes how to#
How to display cmd.exe when program I have read the documentation fo QProcess carefully, and also have the same question: Why I do not need to add double-quotes when I choose the QProcess::start() overload which accepts a list of arguments? #2 - I want to see what have been sent to and respond in cmd.exe.
Is there anything wrong in QString(""concat:%1"").arg(fileList.join("|"))? If I change a command which has no double quotes, same method, it will be ok. QString savePath = "C:/Users/ehehe/Desktop/output.mp3" ĪrgvList.append(QString("\"concat:%1\"").arg(fileList.join("|"))) īut do nothing. In Qt program, I use QProcess to do same thing: QStringList fileList įileList.append("C:/Users/ehehe/Desktop/file1.mp3") įileList.append("C:/Users/ehehe/Desktop/file2.mp3")
> ffmpeg.exe -i "concat:C:/Users/ehehe/Desktop/file1.mp3|C:/Users/ehehe/Desktop/file2.mp3" -acodec copy C:/Users/ehehe/Desktop/output.mp3 In Windows cmd.exe I can use this command to merge two mp3 files: I want to use Qt to creat a GUI for part of ffmpeg features. I have two questions and have searched in internet but not solve.
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