problem with QProcess in Qt4

Basically I try to start a process and print the output on a QTextEdit.

I connect process.readyRead() signal to a slot in which I call process.readAll() to get the output. For some processes, such as "cmd.exe",I successfully get the output; but in the others, such as the "make" utility used in compiling Qt codes, I cannot get any output.

Can anyone tell me the reason, and how to solve this problem?

Does make emit text to stdout or stderr?

Quote:

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Originally Posted by e8johan

Does make emit text to stdout or stderr?

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I use Qt::connect(&process,SIGNAL(readyRead()),this,SLOT (showText())), and in showText() I use process.readAll().

Quote:

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Originally Posted by kennyxing

I use Qt::connect(&process,SIGNAL(readyRead()),this,SLOT (showText())), and in showText() I use process.readAll().

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Really? Then make shouldn't cause any trouble... That's the way Edyuk recieve output from compilation and no problem has ever occured on any platform...

Quote:

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Originally Posted by fullmetalcoder

Really? Then make shouldn't cause any trouble... That's the way Edyuk recieve output from compilation and no problem has ever occured on any platform...

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The following is pretty much the code. Can you take a look at it?

Code:

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{
    process.setWorkingDirectory(file.absolutePath());
    QObject::connect(&process,SIGNAL(readyReadStandardOutput()),
		    this,SLOT(output())); 
    QObject::connect(&process,SIGNAL(readyReadStandardError()),
		    this,SLOT(output())); 
    process.start("make");
}

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The output() slot is:

Code:

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output(){
	out.append(QString(process.readAllStandardOutput()));	
	out.append(QString(process.readAllStandardError()));	
}

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