单击wxButton然后单击另一个wxButton时，我的wxWidgets应用程序出现问题。第一次单击将正常进行，并且可以正确处理该事件，但是第二次单击（无论是在同一按钮上还是在其他按钮上）将导致段错误。我在Ubuntu Linux上使用Code :: Blocks作为我的IDE。这是我的代码供参考：
main.cpp
/***************************************************************
* Name: assignment7Main.cpp
* Purpose: Code for Application Frame
* Author: Nico ()
* Created: 2020-03-05
* Copyright: Nico ()
* License:
**************************************************************/
#include "wx_pch.h"
#include "assignment7Main.h"
#include <wx/msgdlg.h>
#include "wx/file.h"
#include "wx/url.h"
#include <fstream>
//(*InternalHeaders(assignment7Frame)
#include <wx/intl.h>
#include <wx/string.h>
//*)
//helper functions
enum wxbuildinfoformat {
short_f, long_f };
wxString wxbuildinfo(wxbuildinfoformat format)
{
wxString wxbuild(wxVERSION_STRING);
if (format == long_f )
{
#if defined(__WXMSW__)
wxbuild << _T("-Windows");
#elif defined(__UNIX__)
wxbuild << _T("-Linux");
#endif
#if wxUSE_UNICODE
wxbuild << _T("-Unicode build");
#else
wxbuild << _T("-ANSI build");
#endif // wxUSE_UNICODE
}
return wxbuild;
}
//(*IdInit(assignment7Frame)
const long assignment7Frame::ID_BUTTON1 = wxNewId();
const long assignment7Frame::ID_TEXTCTRL1 = wxNewId();
const long assignment7Frame::ID_BUTTON3 = wxNewId();
const long assignment7Frame::ID_TEXTCTRL2 = wxNewId();
const long assignment7Frame::ID_BUTTON2 = wxNewId();
const long assignment7Frame::ID_LISTBOX1 = wxNewId();
const long assignment7Frame::ID_GAUGE1 = wxNewId();
const long assignment7Frame::ID_PANEL1 = wxNewId();
const long assignment7Frame::idMenuQuit = wxNewId();
const long assignment7Frame::idMenuAbout = wxNewId();
const long assignment7Frame::ID_STATUSBAR1 = wxNewId();
//*)
BEGIN_EVENT_TABLE(assignment7Frame,wxFrame)
//(*EventTable(assignment7Frame)
//*)
END_EVENT_TABLE()
assignment7Frame::assignment7Frame(wxWindow* parent,wxWindowID id)
{
//(*Initialize(assignment7Frame)
wxBoxSizer* BoxSizer1;
wxBoxSizer* BoxSizer2;
wxBoxSizer* BoxSizer3;
wxBoxSizer* BoxSizer4;
wxBoxSizer* BoxSizer5;
wxBoxSizer* BoxSizer6;
wxBoxSizer* BoxSizer7;
wxFlexGridSizer* FlexGridSizer1;
wxFlexGridSizer* FlexGridSizer2;
wxMenu* Menu1;
wxMenu* Menu2;
wxMenuBar* MenuBar1;
wxMenuItem* MenuItem1;
wxMenuItem* MenuItem2;
wxStaticBoxSizer* StaticBoxSizer2;
Create(parent, wxID_ANY, wxEmptyString, wxDefaultPosition, wxDefaultSize, wxDEFAULT_FRAME_STYLE, _T("wxID_ANY"));
BoxSizer1 = new wxBoxSizer(wxHORIZONTAL);
MainPanel = new wxPanel(this, ID_PANEL1, wxDefaultPosition, wxDefaultSize, wxTAB_TRAVERSAL, _T("ID_PANEL1"));
FlexGridSizer1 = new wxFlexGridSizer(4, 1, 0, 0);
FlexGridSizer2 = new wxFlexGridSizer(2, 2, 0, 0);
BoxSizer2 = new wxBoxSizer(wxHORIZONTAL);
URLButton = new wxButton(MainPanel, ID_BUTTON1, _("Select URL File"), wxDefaultPosition, wxDefaultSize, 0, wxDefaultValidator, _T("ID_BUTTON1"));
BoxSizer2->Add(URLButton, 1, wxALL|wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTER_VERTICAL, 5);
FlexGridSizer2->Add(BoxSizer2, 1, wxALL|wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTER_VERTICAL, 5);
BoxSizer3 = new wxBoxSizer(wxHORIZONTAL);
URLText = new wxTextCtrl(MainPanel, ID_TEXTCTRL1, _("Text"), wxDefaultPosition, wxSize(400,25), 0, wxDefaultValidator, _T("ID_TEXTCTRL1"));
BoxSizer3->Add(URLText, 1, wxALL|wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTER_VERTICAL, 5);
FlexGridSizer2->Add(BoxSizer3, 1, wxALL|wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTER_VERTICAL, 5);
BoxSizer4 = new wxBoxSizer(wxHORIZONTAL);
WordButton = new wxButton(MainPanel, ID_BUTTON3, _("Select Word FIle"), wxDefaultPosition, wxDefaultSize, 0, wxDefaultValidator, _T("ID_BUTTON3"));
BoxSizer4->Add(WordButton, 1, wxALL|wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTER_VERTICAL, 5);
FlexGridSizer2->Add(BoxSizer4, 1, wxALL|wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTER_VERTICAL, 5);
BoxSizer5 = new wxBoxSizer(wxHORIZONTAL);
WordText = new wxTextCtrl(MainPanel, ID_TEXTCTRL2, _("Text"), wxDefaultPosition, wxSize(400,25), 0, wxDefaultValidator, _T("ID_TEXTCTRL2"));
BoxSizer5->Add(WordText, 1, wxALL|wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTER_VERTICAL, 5);
FlexGridSizer2->Add(BoxSizer5, 1, wxALL|wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTER_VERTICAL, 5);
FlexGridSizer1->Add(FlexGridSizer2, 1, wxALL|wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTER_VERTICAL, 5);
BoxSizer6 = new wxBoxSizer(wxHORIZONTAL);
GoButton = new wxButton(MainPanel, ID_BUTTON2, _("Go"), wxDefaultPosition, wxSize(100,30), 0, wxDefaultValidator, _T("ID_BUTTON2"));
BoxSizer6->Add(GoButton, 1, wxALL|wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTER_VERTICAL, 5);
FlexGridSizer1->Add(BoxSizer6, 1, wxALL|wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTER_VERTICAL, 5);
StaticBoxSizer2 = new wxStaticBoxSizer(wxHORIZONTAL, MainPanel, _("Top URLs"));
URLList = new wxListBox(MainPanel, ID_LISTBOX1, wxDefaultPosition, wxSize(600,300), 0, 0, wxVSCROLL, wxDefaultValidator, _T("ID_LISTBOX1"));
StaticBoxSizer2->Add(URLList, 1, wxALL|wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTER_VERTICAL, 5);
FlexGridSizer1->Add(StaticBoxSizer2, 1, wxALL|wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTER_VERTICAL, 5);
BoxSizer7 = new wxBoxSizer(wxHORIZONTAL);
ProgressGauge = new wxGauge(MainPanel, ID_GAUGE1, 100, wxDefaultPosition, wxSize(600,25), 0, wxDefaultValidator, _T("ID_GAUGE1"));
BoxSizer7->Add(ProgressGauge, 1, wxALL|wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTER_VERTICAL, 5);
FlexGridSizer1->Add(BoxSizer7, 1, wxALL|wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTER_VERTICAL, 5);
MainPanel->SetSizer(FlexGridSizer1);
FlexGridSizer1->Fit(MainPanel);
FlexGridSizer1->SetSizeHints(MainPanel);
BoxSizer1->Add(MainPanel, 1, wxALL|wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTER_VERTICAL, 5);
SetSizer(BoxSizer1);
MenuBar1 = new wxMenuBar();
Menu1 = new wxMenu();
MenuItem1 = new wxMenuItem(Menu1, idMenuQuit, _("Quit\tAlt-F4"), _("Quit the application"), wxITEM_NORMAL);
Menu1->Append(MenuItem1);
MenuBar1->Append(Menu1, _("&File"));
Menu2 = new wxMenu();
MenuItem2 = new wxMenuItem(Menu2, idMenuAbout, _("About\tF1"), _("Show info about this application"), wxITEM_NORMAL);
Menu2->Append(MenuItem2);
MenuBar1->Append(Menu2, _("Help"));
SetMenuBar(MenuBar1);
StatusBar1 = new wxStatusBar(this, ID_STATUSBAR1, 0, _T("ID_STATUSBAR1"));
int __wxStatusBarWidths_1[1] = { -1 };
int __wxStatusBarStyles_1[1] = { wxSB_NORMAL };
StatusBar1->SetFieldsCount(1,__wxStatusBarWidths_1);
StatusBar1->SetStatusStyles(1,__wxStatusBarStyles_1);
SetStatusBar(StatusBar1);
BoxSizer1->Fit(this);
BoxSizer1->SetSizeHints(this);
Connect(ID_BUTTON1,wxEVT_COMMAND_BUTTON_CLICKED,(wxObjectEventFunction)&assignment7Frame::OnURLButtonClick);
Connect(ID_BUTTON3,wxEVT_COMMAND_BUTTON_CLICKED,(wxObjectEventFunction)&assignment7Frame::OnWordButtonClick);
Connect(ID_BUTTON2,wxEVT_COMMAND_BUTTON_CLICKED,(wxObjectEventFunction)&assignment7Frame::OnGoButtonClick);
Connect(idMenuQuit,wxEVT_COMMAND_MENU_SELECTED,(wxObjectEventFunction)&assignment7Frame::OnQuit);
Connect(idMenuAbout,wxEVT_COMMAND_MENU_SELECTED,(wxObjectEventFunction)&assignment7Frame::OnAbout);
//*)
URLText->ChangeValue("");
WordText->ChangeValue("");
URLChosen = 0;
WordChosen = 0;
}
assignment7Frame::~assignment7Frame()
{
//(*Destroy(assignment7Frame)
//*)
}
void assignment7Frame::OnQuit(wxCommandEvent& event)
{
Close();
}
void assignment7Frame::OnAbout(wxCommandEvent& event)
{
wxString msg = wxbuildinfo(long_f);
wxMessageBox(msg, _("Welcome to..."));
}
void assignment7Frame::OnURLButtonClick(wxCommandEvent& event)
{
if (URLChosen) {
for (int i = 0; i < urlsCnt; i++)
delete[] urls[i];
}
wxFileDialog dlg(this, wxT("Open .txt file containing URLs"), "", "", "Data files (*.txt)|*.txt", wxFD_OPEN | wxFD_FILE_MUST_EXIST);
if (dlg.ShowModal() == wxID_OK) {
wxFile urlFile(dlg.GetPath(), wxFile::read);
URLText->ChangeValue(dlg.GetPath());
if (urlFile.IsOpened()) {
//read file to filestring
urlFile.ReadAll(urlFileStringPtr);
urlFile.Close();
}
}
else
return;
std::string s = urlFileString.ToStdString();
urlsCnt = 0;
char * temp = new char[s.size() + 1];
std::copy(s.begin(), s.end(), temp);
temp[s.size()] = '\0'; // don't forget the terminating 0
for (int i = 0, j = 0; i < strlen(temp); i++) {
if (s[i] == '\n') {
urls[urlsCnt] = new char[i - j + 1];
for (int x = 0; x < i - j; x++)
urls[urlsCnt][x] = temp[j+x];
urls[urlsCnt][i-j-1] = '\0';
urlsCnt++;
j = i;
}
}
URLChosen = 1;
}
void assignment7Frame::OnWordButtonClick(wxCommandEvent& event)
{
if (WordChosen) {
for (int i = 0; i < wordsCnt; i++)
delete[] words[i];
}
wxFileDialog dlg(this, wxT("Open .txt file containing target words"), "", "", "Data files (*.txt)|*.txt", wxFD_OPEN | wxFD_FILE_MUST_EXIST);
if (dlg.ShowModal() == wxID_OK) {
wxFile wordFile(dlg.GetPath(), wxFile::read);
WordText->ChangeValue(dlg.GetPath());
if (wordFile.IsOpened()) {
wordFile.ReadAll(wordFileStringPtr);
wordFile.Close();
}
}
else
return;
std::string s = wordFileString.ToStdString();
wordsCnt = 0;
char * temp = new char[s.size() + 1];
std::copy(s.begin(), s.end(), temp);
temp[s.size()] = '\0'; // don't forget the terminating 0
for (int i = 0, j = 0; i < strlen(temp); i++) {
if (s[i] == '\n') {
words[wordsCnt] = new char[i - j + 1];
for (int x = 0; x < i - j; x++)
words[wordsCnt][x] = temp[j+x];
words[wordsCnt][i-j-1] = '\0';
wordsCnt++;
j = i;
}
}
WordChosen = 1;
}
void assignment7Frame::OnGoButtonClick(wxCommandEvent& event)
{
if (URLChosen && WordChosen) {
ProgressGauge->SetValue(33);
wxURL url(urls[0]);
if (url.GetError() == wxURL_NOERR) {
wxInputStream *in_stream;
in_stream = url.GetInputStream();
}
else {
wxString msg("not working");
wxMessageBox(msg, _("PROCESSING ERROR"));
}
}
else {
wxString msg("Error, can't process without both URL file and word file chosen. Please choose file.");
wxMessageBox(msg, _("PROCESSING ERROR"));
}
}
main.h
/***************************************************************
* Name: assignment7Main.h
* Purpose: Defines Application Frame
* Author: Nico ()
* Created: 2020-03-05
* Copyright: Nico ()
* License:
**************************************************************/
#ifndef ASSIGNMENT7MAIN_H
#define ASSIGNMENT7MAIN_H
//(*Headers(assignment7Frame)
#include <wx/button.h>
#include <wx/frame.h>
#include <wx/gauge.h>
#include <wx/listbox.h>
#include <wx/menu.h>
#include <wx/panel.h>
#include <wx/sizer.h>
#include <wx/statusbr.h>
#include <wx/textctrl.h>
//*)
#include <string>
//using namespace std;
class assignment7Frame: public wxFrame
{
public:
assignment7Frame(wxWindow* parent,wxWindowID id = -1);
virtual ~assignment7Frame();
private:
//(*Handlers(assignment7Frame)
void OnQuit(wxCommandEvent& event);
void OnAbout(wxCommandEvent& event);
void OnURLButtonClick(wxCommandEvent& event);
void OnWordButtonClick(wxCommandEvent& event);
void OnGoButtonClick(wxCommandEvent& event);
//*)
//(*Identifiers(assignment7Frame)
static const long ID_BUTTON1;
static const long ID_TEXTCTRL1;
static const long ID_BUTTON3;
static const long ID_TEXTCTRL2;
static const long ID_BUTTON2;
static const long ID_LISTBOX1;
static const long ID_GAUGE1;
static const long ID_PANEL1;
static const long idMenuQuit;
static const long idMenuAbout;
static const long ID_STATUSBAR1;
//*)
//(*Declarations(assignment7Frame)
wxButton* GoButton;
wxButton* URLButton;
wxButton* WordButton;
wxGauge* ProgressGauge;
wxListBox* URLList;
wxPanel* MainPanel;
wxStatusBar* StatusBar1;
wxTextCtrl* URLText;
wxTextCtrl* WordText;
//*)
wxString urlFileString;
wxString * urlFileStringPtr = &urlFileString;
wxString wordFileString;
wxString * wordFileStringPtr = &wordFileString;
int URLChosen;
int WordChosen;
int urlsCnt;
int wordsCnt;
char * urls[];
char * words[];
DECLARE_EVENT_TABLE()
};
#endif // ASSIGNMENT7MAIN_H
调试器信息] >>
GUI pic oneGUI pic twoActive debugger config: GDB/CDB debugger:Default Building to ensure sources are up-to-date Selecting target: Debug Adding source dir: /home/dawbuntu/GUI/assignment7/ Adding source dir: /home/dawbuntu/GUI/assignment7/ Adding file: /home/dawbuntu/GUI/assignment7/bin/Debug/assignment7 Changing directory to: /home/dawbuntu/GUI/assignment7/. Set variable: LD_LIBRARY_PATH=.:/usr/lib/x86_64-linux-gnu: Starting debugger: /usr/bin/gdb -nx -fullname -quiet -args /home/dawbuntu/GUI/assignment7/bin/Debug/assignment7 done Setting breakpoints Debugger name and version: GNU gdb (Ubuntu 8.1-0ubuntu3) 8.1.0.20180409-git Child process PID: 5677 In gtk_widget_style_get_valist () (/usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0) #23 0x000055555556b0e1 in assignment7Frame::OnWordButtonClick (this=0x555555888dd0, event=...) at /home/dawbuntu/GUI/assignment7/assignment7Main.cpp:229 /home/dawbuntu/GUI/assignment7/assignment7Main.cpp:229:8826:beg:0x55555556b0e1 At /home/dawbuntu/GUI/assignment7/assignment7Main.cpp:229 Continuing... Program terminated with signal SIGSEGV, Segmentation fault. Debugger finished with status 0GUI图片
无论何时在第二个事件被触发时，程序都会不断崩溃和出现段错误。我猜这是wxSmith和Code :: Block的GUI自动生成代码，但是我不确定，因为我对wxWidgets很陌生。非常感谢帮助。
单击wxButton然后单击另一个wxButton时，我的wxWidgets应用程序出现问题。第一次单击将正常进行，事件可以正常处理，但是第二次单击是否...
这是问题：