signal problem

[brantyou]

I want to send a signal in a slot.The code like:
void MainQtWidget::GetTextMsg(){
*val = MainTextEdit->toPlainText();//get QLineEdit text
emit this->FromQtToCoreSignal(&val);
}GetTextMsg() is a slot,about this code:
MainTextEdit = new QTextEdit("Waiting for enter!");
connect(MainSureButton, SIGNAL(clicked()), this, SLOT(GetTextMsg()));
It runs' problem:
The program has unexpectedly finished.

debug problem:
The inferior stopped because it received a signal from the Operating System.

Signal name :
SIGSEGV
Signal meaning :
Segmentation fault



How can I do? Could you tell me what mistake I have make?
Thanks very much!

[tbscope]

I want to send a signal in a slot.The code like:

*val = MainTextEdit->toPlainText();//get QLineEdit text

*val = MainTextEdit->toPlainText();//get QLineEdit text

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What is this?

[brantyou]

to get the QLineEdit text and save in val which defined like QString *val;

[tbscope]

Does this even compile?

Anyway, QLineEdit doesn't have any toPlainText() function since it can only contain plain text.

Why don't you simply do something like this?

void MyClass::mySlot()
{
    emit mySignal(myLineEdit->text());
}

void MyClass::mySlot()
{
    emit mySignal(myLineEdit->text());
}

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[brantyou]

Can it send the text that I just had enterd? I try it at once.Thanks for you help!My English is not good,so much time can't make others known my mind!

[brantyou]

I try it . It didn't work. Because I can't find the text() in myLineEdit.
myLineEdit->text() the text() is invalid.