Sorry for puzzle you! It seems that the default mingw compiler Code::Blocks shipped with only support X86 on Windows. What I need is X64 binary exe, and this is the origin of evil.
By the way, you can easily reproduce this phenomenon by create a simple wxWidgets Dialog based GUI project,and comment the dialog set up lines in xxApp::OnInit() function,
then run the program in debug mode. At this time, the X64 GDB debugger would hang up,you could not stop it by press the debug button.
// following lines are C::B auto-generate code, comment them, no dialog would present(intend to do this), and the X64 GDB debugger would hang up
// sbvpnDialog* dlg = new sbvpnDialog(0L);
// dlg->SetIcon(wxICON(aaaa)); // To Set App Icon
// dlg->Show();
I hope Code::Blocks could fix this bug in the next patch version. ;D