Question

我正在使用wxWidgets，而且我已经尝试将两个按钮分开了。 sizers但是当我同时点击它们时，它们仍会产生相同的结果。查看标头和cpp代码。我需要帮助。在这里待了一个小时。谢谢:(

HEADER：

#include <vector>
#include <wx/wx.h>
using namespace std;

const int MAX = 100;
class determinantsFrame : public wxFrame
{
public:
    determinantsFrame();
    virtual ~determinantsFrame();

    void OnQuit(wxCommandEvent &event);
    void OnAbout(wxCommandEvent &event);
    void OnClose(wxCloseEvent &event);
    void OnCalculateClick(wxCommandEvent &event);
    void OnReset(wxCommandEvent &event);
    double determinant(double matrix[MAX][MAX], int order);

private:
    wxPanel *MainPanel;
    wxButton *Enter;
    wxButton *Reset;
    wxMenu *fileMenu;
    wxMenu *helpMenu;
    wxMenuBar *menuBar;
    wxTextEntryDialog *td;
    wxString str;
    //vector<double> value;

    DECLARE_EVENT_TABLE();
};

CPP：

#include <wx/wx.h>
#include "determinantsFrame.h"
#include <vector>
#include <stdio.h>
#include <cmath>
#include <vector>
using namespace std;

BEGIN_EVENT_TABLE(determinantsFrame, wxFrame)
    EVT_MENU(wxID_ABOUT, determinantsFrame::OnAbout)
    EVT_MENU(wxID_EXIT, determinantsFrame::OnQuit)
    EVT_CLOSE(determinantsFrame::OnClose)
    EVT_BUTTON(wxID_ANY, determinantsFrame::OnCalculateClick)
    EVT_BUTTON(wxID_ANY, determinantsFrame::OnReset)
END_EVENT_TABLE()

int n;
wxTextCtrl *numbers[100][100];

void determinantsFrame::OnClose(wxCloseEvent &event)
{
    exit(1);
}

void determinantsFrame::OnAbout(wxCommandEvent &event)
{
    wxString msg;
    msg.Printf(wxT("Hello and welcome to %s"), wxVERSION_STRING);
    wxMessageBox(msg, wxT("About Determinants Calculator"));
}

void determinantsFrame::OnQuit(wxCommandEvent &event)
{
    Close();
}

determinantsFrame::~determinantsFrame()
{
    Destroy();
}

determinantsFrame::determinantsFrame() : wxFrame(NULL, wxID_ANY, wxT("Determinants Calculator"), wxDefaultPosition, wxDefaultSize, wxDEFAULT_FRAME_STYLE)
{
    wxStaticBoxSizer *matrix;
    wxFlexGridSizer *cells;
    wxBoxSizer *subBox;
    wxBoxSizer *mainBox;

    fileMenu = new wxMenu;
    helpMenu = new wxMenu;
    menuBar = new wxMenuBar();

    helpMenu->Append(wxID_ABOUT, wxT("&About"), wxT("Show about dialog"));
    fileMenu->Append(wxID_EXIT, wxT("&Exit"), wxT("Quit this program"));

    menuBar->Append(fileMenu, wxT("&File"));
    menuBar->Append(helpMenu, wxT("&Help"));

    td = new wxTextEntryDialog(this, wxT("Enter the number of dimensions: "), wxGetTextFromUserPromptStr, wxT("2"));
    td->ShowModal();
    SetMenuBar(menuBar);
    str = td->GetValue();
    n = wxAtoi(str);

    mainBox = new wxBoxSizer(wxVERTICAL);
    MainPanel = new wxPanel(this, wxID_ANY);
    matrix = new wxStaticBoxSizer(wxVERTICAL, MainPanel, "Matrix: ");
    cells = new wxFlexGridSizer(0, n, 0, 0);
    subBox = new wxBoxSizer(wxVERTICAL);

    for (int i = 0; i < n; i++)
        for (int j = 0; j < n; j++)
        {
            numbers[i][j] = new wxTextCtrl(MainPanel, wxID_ANY, wxEmptyString, wxDefaultPosition, wxSize(40,20), 0, wxDefaultValidator, _T("ID_TextCtrl"));
            cells->Add(numbers[i][j], 0, wxALL | wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTER_VERTICAL, 5);
        }

    matrix->Add(cells, 1, wxALL|wxEXPAND|wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTER_VERTICAL, 2);
    subBox->Add(matrix, 1, wxALL|wxEXPAND|wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTER_VERTICAL, 5);

    wxBoxSizer *enb = new wxBoxSizer(wxHORIZONTAL);
    wxBoxSizer *rnb = new wxBoxSizer(wxHORIZONTAL);
    wxBoxSizer *bc = new wxBoxSizer(wxHORIZONTAL);

    Enter = new wxButton(MainPanel, wxID_ANY, wxT("Calculate"), wxDefaultPosition, wxDefaultSize);
    Reset = new wxButton(MainPanel, wxID_ANY, wxT("Reset"), wxDefaultPosition, wxDefaultSize);
    enb->Add(Enter, 1, wxALL |wxEXPAND|wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTER_VERTICAL, 5);
    rnb->Add(Reset, 1, wxALL |wxEXPAND|wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTER_VERTICAL, 5);
    bc->Add(enb, 0, wxALL | wxEXPAND);
    bc->Add(rnb, 0, wxALL | wxEXPAND);
    subBox->Add(bc, 0, wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTER_VERTICAL);
    MainPanel->SetSizer(subBox);
    mainBox->Add(MainPanel);
    mainBox->Fit(this);
    this->SetSizer(mainBox);
    CentreOnScreen();
}

void determinantsFrame::OnReset(wxCommandEvent &event)
{
    for (int i = 0; i < n; i++)
        for (int j = 0; j < n; j++)
            numbers[i][j]->SetLabelText(wxEmptyString);
}

void determinantsFrame::OnCalculateClick(wxCommandEvent &event)
{
    double elem[MAX][MAX], det;
    for (int i = 0; i < n; i++)
        for (int j = 0; j < n; j++)
            elem[i][j] = static_cast<double>(wxAtoi(numbers[i][j]->GetValue()));

    det = determinant(elem, n);
    wxMessageBox(wxString::Format(wxT("%.2f"),det));
}

double determinantsFrame::determinant(double matrix[MAX][MAX], int order)
{
    double det = 0, temp[MAX][MAX]; int row, col;

    if (order == 1)
        return matrix[0][0];
    else if (order == 2)
        return ((matrix[0][0] * matrix[1][1]) - (matrix[0][1] * matrix[1][0]));
    else
    {
        for (int r = 0; r < order; r++)
        {
            col = 0; row = 0;
            for (int i = 1; i < order; i++)
            {
                for (int j = 0; j < order; j++)
                {
                    if (j == r)
                        continue;

                    temp[row][col] = matrix[i][j];
                    col++;

                    if (col == order - 1)
                        col = 0;
                }
                row++;
            }
            det = det + (matrix[0][r] * pow(-1, r) * determinant(temp, order - 1));
        }
        return det;
    }
}

Answer 1

您的问题出在您分配给按钮的ID中，这两个按钮都是wxID_ANY，以及您在CPP文件中的消息地图。

EVT_BUTTON(wxID_ANY, determinantsFrame::OnCalculateClick)
EVT_BUTTON(wxID_ANY, determinantsFrame::OnReset)

当触发wxID_ANY的消息映射时，它首先由OnCalculateClick处理，因此Reset按钮与Calculate按钮的作用相同。我敢打赌，如果你切换这两行，两个按钮都会像重置按钮一样。

“重置”按钮执行“计算”按钮的功能

1 个答案: