how to solve the bug:the inferior stopped because it received a singal from ...

[wter27]

i changed the code like you said.But it comes out the same error code.
do i need to initializ the pointer of actionMenu_login ?Because it stopped line 32 of the file ui_temp.h .

[Zlatomir]

That should be Ok, since that code is generated by UIC (unless you modified manually the ui_CLASS.h, you shouldn't do that)

One other problem that i see (might not be related to this, i don't know what could be the result of it, but it is a problem) is that you call show() then you call exec() (i'm pretty sure that is not recommended)
This happens in main.cpp:

// login_box.show(); //comment or delete this line, because exec() will also show your (modal) dialog... so you don't need this 
   if(login_box.exec()==QDialog::Rejected)//
   {

// login_box.show(); //comment or delete this line, because exec() will also show your (modal) dialog... so you don't need this 
   if(login_box.exec()==QDialog::Rejected)//
   {

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[wter27]

thank you very much for the tips you give.Because my english is poor.So it's hard for me to understand the word you said .
I would modified the code later to see the problem .