传递类/对象/数据？在两种形式之间 我目前正在研究一个C++项目，它要求我把数据从一个表单传递给另一个表单。在这种情况下，用户将使用用户名和密码在CreateCount表单（create_account.h）上创建一个帐户。此用户名和密码将存储为对象的私有属性（称之为user），他将进入登录表单（Login.h）。但是，我无法让系统将此表单上输入的密码与之前的密码进行验证。我想我必须将对象（user）传递到此登录表单，以便验证使用对象的私有属性（user）输入的用户名和密码。但是，我不太清楚如何将对象传递到表单的语法。（我只熟悉通过函数传递对象）
我对这门语言不熟悉，非常感谢您的帮助 下面是我写的代码传递类/对象/数据？在两种形式之间 我目前正在研究一个C++项目，它要求我把数据从一个表单传递给另一个表单。在这种情况下，用户将使用用户名和密码在CreateCount表单（create_account.h）上创建一个帐户。此用户名和密码将存储为对象的私有属性（称之为user），他将进入登录表单（Login.h）。但是，我无法让系统将此表单上输入的密码与之前的密码进行验证。我想我必须将对象（user）传递到此登录表单，以便验证使用对象的私有属性（user）输入的用户名和密码。但是，我不太清楚如何将对象传递到表单的语法。（我只熟悉通过函数传递对象）,c++,.net,c++-cli,C++,.net,C++ Cli,我对这门语言不熟悉，非常感谢您的帮助 下面是我写的代码 **//CreateAccount.h** #pragma once #include "user2.h" #include <stdlib.h> #include "ExpenseTracker.h" #include "User_Login.h" #include <string> #include <msclr/marshal_cppstd.h> namespace EzXpns2 {
**//CreateAccount.h**
#pragma once
#include "user2.h"
#include <stdlib.h>
#include "ExpenseTracker.h"
#include "User_Login.h"
#include <string>
#include <msclr/marshal_cppstd.h>
namespace EzXpns2 {
using namespace System;
using namespace System::ComponentModel;
using namespace System::Collections;
using namespace System::Windows::Forms;
using namespace System::Data;
using namespace System::Drawing;
/// <summary>
/// Summary for Create_Account
/// </summary>
public ref class Create_Account : public System::Windows::Forms::Form
{
public:
Create_Account(void)
{
InitializeComponent();
//
//TODO: Add the constructor code here
//
}
protected:
/// <summary>
/// Clean up any resources being used.
/// </summary>
~Create_Account()
{
if (components)
{
delete components;
}
}
private: System::Windows::Forms::Button^ btnCreateNewAccount;
protected:
protected:
private: System::Windows::Forms::TextBox^ txtBxPassword;
private: System::Windows::Forms::Label^ lblPassword;
private: System::Windows::Forms::TextBox^ txtBxUsername;
private: System::Windows::Forms::Label^ lblUsername;
private: System::Windows::Forms::TextBox^ txtBxReenterPassword;
private: System::Windows::Forms::Label^ label1;
//private: System::Windows::Forms:User_Login^ userlogin;
//private User_Login^ UserLogin;
private:
/// <summary>
/// Required designer variable.
/// </summary>
System::ComponentModel::Container ^components;
#pragma region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
void InitializeComponent(void)
{
this->btnCreateNewAccount = (gcnew System::Windows::Forms::Button());
this->txtBxPassword = (gcnew System::Windows::Forms::TextBox());
this->lblPassword = (gcnew System::Windows::Forms::Label());
this->txtBxUsername = (gcnew System::Windows::Forms::TextBox());
this->lblUsername = (gcnew System::Windows::Forms::Label());
this->txtBxReenterPassword = (gcnew System::Windows::Forms::TextBox());
this->label1 = (gcnew System::Windows::Forms::Label());
this->SuspendLayout();
//
// btnCreateNewAccount
//
this->btnCreateNewAccount->Location = System::Drawing::Point(147, 147);
this->btnCreateNewAccount->Name = L"btnCreateNewAccount";
this->btnCreateNewAccount->Size = System::Drawing::Size(126, 23);
this->btnCreateNewAccount->TabIndex = 3;
this->btnCreateNewAccount->Text = L"Create New Account";
this->btnCreateNewAccount->UseVisualStyleBackColor = true;
this->btnCreateNewAccount->Click += gcnew System::EventHandler(this, &Create_Account::btnCreateNewAccount_Click);
//
// txtBxPassword
//
this->txtBxPassword->Location = System::Drawing::Point(147, 68);
this->txtBxPassword->Name = L"txtBxPassword";
this->txtBxPassword->Size = System::Drawing::Size(126, 20);
this->txtBxPassword->TabIndex = 1;
this->txtBxPassword->UseSystemPasswordChar = true;
//
// lblPassword
//
this->lblPassword->AutoSize = true;
this->lblPassword->Location = System::Drawing::Point(26, 73);
this->lblPassword->Name = L"lblPassword";
this->lblPassword->Size = System::Drawing::Size(56, 13);
this->lblPassword->TabIndex = 12;
this->lblPassword->Text = L"Password:";
//
// txtBxUsername
//
this->txtBxUsername->Location = System::Drawing::Point(149, 27);
this->txtBxUsername->Name = L"txtBxUsername";
this->txtBxUsername->Size = System::Drawing::Size(126, 20);
this->txtBxUsername->TabIndex = 0;
//
// lblUsername
//
this->lblUsername->AutoSize = true;
this->lblUsername->Location = System::Drawing::Point(24, 29);
this->lblUsername->Name = L"lblUsername";
this->lblUsername->Size = System::Drawing::Size(86, 13);
this->lblUsername->TabIndex = 10;
this->lblUsername->Text = L"Enter Username:";
//
// txtBxReenterPassword
//
this->txtBxReenterPassword->Location = System::Drawing::Point(147, 100);
this->txtBxReenterPassword->Name = L"txtBxReenterPassword";
this->txtBxReenterPassword->Size = System::Drawing::Size(126, 20);
this->txtBxReenterPassword->TabIndex = 2;
this->txtBxReenterPassword->UseSystemPasswordChar = true;
//
// label1
//
this->label1->AutoSize = true;
this->label1->Location = System::Drawing::Point(26, 105);
this->label1->Name = L"label1";
this->label1->Size = System::Drawing::Size(100, 13);
this->label1->TabIndex = 15;
this->label1->Text = L"Re-enter Password:";
//
// Create_Account
//
this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
this->ClientSize = System::Drawing::Size(309, 188);
this->Controls->Add(this->txtBxReenterPassword);
this->Controls->Add(this->label1);
this->Controls->Add(this->btnCreateNewAccount);
this->Controls->Add(this->txtBxPassword);
this->Controls->Add(this->lblPassword);
this->Controls->Add(this->txtBxUsername);
this->Controls->Add(this->lblUsername);
this->Name = L"Create_Account";
this->Text = L"Welcome to EzXpns -Create Account";
this->ResumeLayout(false);
this->PerformLayout();
}
#pragma endregion
private: System::Void btnCreateNewAccount_Click(System::Object^ sender, System::EventArgs^ e) {
ExpenseTracker *myTracker = new ExpenseTracker();
string strUsername, strPassword, strReenterPassword;
bool checkPassword = false;
System::String^ str1 = txtBxUsername->Text;
strUsername = marshal_as<string>(str1);
//convert system string to string
System::String^ str2 = txtBxPassword->Text;
strPassword = marshal_as<string>(str2);
System::String^ str3 = txtBxReenterPassword->Text;
strReenterPassword = marshal_as<string>(str3);
if (strPassword == strReenterPassword)
checkPassword = true;
if (checkPassword)
{
User *newUser = new User(strUsername, strReenterPassword);
(*myTracker).addUser(newUser);
this->Hide();
User_Login^ testDialog = gcnew User_Login;
testDialog->Show();
}
else
MessageBox::Show("Please re-enter your password.\n\nThe password you entered do not match.\nPlease try again.",
"Create User Failure", MessageBoxButtons::OK, MessageBoxIcon::Warning);
}
};
}
//UserLogin.h
#pragma once
#include "user2.h"
#include <stdlib.h>
#include "ExpenseTracker.h"
#include "Create_Account.h"
#include "Login.h"
#include <string>
#include <msclr/marshal_cppstd.h>
namespace EzXpns2 {
using namespace System;
using namespace System::ComponentModel;
using namespace System::Collections;
using namespace System::Windows::Forms;
using namespace System::Data;
using namespace System::Drawing;
using namespace msclr::interop;
/// <summary>
/// Summary for User_Login
/// </summary>
public ref class User_Login : public System::Windows::Forms::Form
{
public:
User_Login(void)//ExpenseTracker *myPtrTracker)
{
InitializeComponent();
//
//TODO: Add the constructor code here
//
//CreateAccountForm = CreateAcct;
//ExpenseTracker *myTracker = myPtrTracker;
}
protected:
/// <summary>
/// Clean up any resources being used.
/// </summary>
~User_Login()
{
if (components)
{
delete components;
}
}
private: System::Windows::Forms::Button^ btnLogin;
protected:
private: System::Windows::Forms::TextBox^ txtBxPassword;
private: System::Windows::Forms::Label^ lblPassword;
private: System::Windows::Forms::TextBox^ txtBxUsername;
private: System::Windows::Forms::Label^ lblUsername;
private: System::Windows::Forms::Form^ CreateAccountForm;
private:
/// <summary>
/// Required designer variable.
/// </summary>
System::ComponentModel::Container ^components;
#pragma region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
void InitializeComponent(void)
{
this->btnLogin = (gcnew System::Windows::Forms::Button());
this->txtBxPassword = (gcnew System::Windows::Forms::TextBox());
this->lblPassword = (gcnew System::Windows::Forms::Label());
this->txtBxUsername = (gcnew System::Windows::Forms::TextBox());
this->lblUsername = (gcnew System::Windows::Forms::Label());
this->SuspendLayout();
//
// btnLogin
//
this->btnLogin->Location = System::Drawing::Point(80, 110);
this->btnLogin->Name = L"btnLogin";
this->btnLogin->Size = System::Drawing::Size(126, 23);
this->btnLogin->TabIndex = 9;
this->btnLogin->Text = L"Login";
this->btnLogin->UseVisualStyleBackColor = true;
this->btnLogin->Click += gcnew System::EventHandler(this, &User_Login::btnLogin_Click);
//
// txtBxPassword
//
this->txtBxPassword->Location = System::Drawing::Point(80, 65);
this->txtBxPassword->Name = L"txtBxPassword";
this->txtBxPassword->Size = System::Drawing::Size(126, 20);
this->txtBxPassword->TabIndex = 8;
this->txtBxPassword->UseSystemPasswordChar = true;
this->txtBxPassword->TextChanged += gcnew System::EventHandler(this, &User_Login::txtBxPassword_TextChanged);
//
// lblPassword
//
this->lblPassword->AutoSize = true;
this->lblPassword->Location = System::Drawing::Point(20, 68);
this->lblPassword->Name = L"lblPassword";
this->lblPassword->Size = System::Drawing::Size(56, 13);
this->lblPassword->TabIndex = 7;
this->lblPassword->Text = L"Password:";
this->lblPassword->Click += gcnew System::EventHandler(this, &User_Login::lblPassword_Click);
//
// txtBxUsername
//
this->txtBxUsername->Location = System::Drawing::Point(82, 24);
this->txtBxUsername->Name = L"txtBxUsername";
this->txtBxUsername->Size = System::Drawing::Size(126, 20);
this->txtBxUsername->TabIndex = 6;
this->txtBxUsername->TextChanged += gcnew System::EventHandler(this, &User_Login::txtBxUsername_TextChanged);
//
// lblUsername
//
this->lblUsername->AutoSize = true;
this->lblUsername->Location = System::Drawing::Point(18, 24);
this->lblUsername->Name = L"lblUsername";
this->lblUsername->Size = System::Drawing::Size(58, 13);
this->lblUsername->TabIndex = 5;
this->lblUsername->Text = L"Username:";
this->lblUsername->Click += gcnew System::EventHandler(this, &User_Login::lblUsername_Click);
//
// User_Login
//
this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
this->ClientSize = System::Drawing::Size(231, 155);
this->Controls->Add(this->btnLogin);
this->Controls->Add(this->txtBxPassword);
this->Controls->Add(this->lblPassword);
this->Controls->Add(this->txtBxUsername);
this->Controls->Add(this->lblUsername);
this->Name = L"User_Login";
this->Text = L"Welcome to EzXpns";
this->Load += gcnew System::EventHandler(this, &User_Login::User_Login_Load);
this->ResumeLayout(false);
this->PerformLayout();
}
#pragma endregion
private: System::Void btnLogin_Click(System::Object^ sender, System::EventArgs^ e) {
//User myUser;
//ExpenseTracker myTracker;
System::String^ str1 = txtBxUsername->Text;
string strUsername = marshal_as<string>(str1);
//convert system string to string
System::String^ str2 = txtBxPassword->Text;
string strPassword = marshal_as<string>(str2);
bool success = false;
success = (*myTracker).login(strUsername, strPassword);
if (success)
{
this->Hide();
Login^ testDialog = gcnew Login;
testDialog->Show();
}
else
{
MessageBox::Show("Please re-enter your password.\n\nThe password you entered is incorrect.\nPlease try again (make sure your caps lock is off).",
"Login Failure", MessageBoxButtons::OK, MessageBoxIcon::Warning);
}
}
private: System::Void lblUsername_Click(System::Object^ sender, System::EventArgs^ e) {
}
private: System::Void lblPassword_Click(System::Object^ sender, System::EventArgs^ e) {
}
private: System::Void txtBxPassword_TextChanged(System::Object^ sender, System::EventArgs^ e) {
}
private: System::Void txtBxUsername_TextChanged(System::Object^ sender, System::EventArgs^ e) {
}
private: System::Void User_Login_Load(System::Object^ sender, System::EventArgs^ e) {
}
};
}
//ExpenseTracker.h
#ifndef _EXPENSETRACKER_H
#define _EXPENSETRACKER_H
#include <string>
#include <vector>
//#include <iostream>
#include "user2.h"
using namespace std;
class ExpenseTracker
{
private:
vector<User*> allMyUsers;
public:
ExpenseTracker(); //empty constructor
void addUser(User*);
int findUser(string);
bool login(string, string);
};
#endif;
**//CreateAccount.h**
#布拉格语一次
#包括“user2.h”
#包括
#包括“ExpenseTracker.h”
#包括“User\u Login.h”
#包括
#包括
名称空间EzXpns2{
使用名称空间系统；
使用名称空间System:：ComponentModel；
使用名称空间系统：：集合；
使用命名空间System:：Windows:：Forms；
使用名称空间System:：Data；
使用名称空间系统：：绘图；
///
///创建帐户的摘要
///
public ref类Create_帐户：public System:：Windows:：Forms:：Form
{
公众：
创建账户（作废）
{
初始化组件（）；
//
//TODO:在此处添加构造函数代码
//
}
受保护的：
///
///清理所有正在使用的资源。
///
~Create_Account（）
{
if（组件）
{
删除组件；
}
}
私有：系统：：Windows：：窗体：：按钮^BTN创建新帐户；
受保护的：
受保护的：
private:System:：Windows:：Forms:：TextBox^txtBxPassword；
私有：系统：：Windows：：窗体：：标签^lblPassword；
私有：系统：：Windows：：窗体：：文本框^txtBxUsername；
私有：系统：：Windows：：窗体：：标签^lblUsername；
私有：系统：：Windows：：窗体：：文本框^TXTBX重新输入密码；
私有：系统：：Windows：：窗体：：标签^label1；
//private:System:：Windows:：Forms:User\u Login^userlogin；
//私人用户登录^UserLogin；
私人：
///
///必需的设计器变量。
///
系统：：组件模型：：容器^组件；
#pragma区域Windows窗体设计器生成的代码
///
///设计器支持所需的方法-不修改
///此方法的内容与代码编辑器一起使用。
///
void初始化组件（void）
{
此->btnCreateNewAccount=（gcnew System:：Windows:：Forms:：Button（））；
这->txtBxPassword=（gcnewsystem:：Windows:：Forms:：TextBox（））；
这->lblPassword=（gcnewsystem:：Windows:：Forms:：Label（））；
这->txtBxUsername=（gcnew System:：Windows:：Forms:：TextBox（））；
这->lblUsername=（gcnewsystem:：Windows:：Forms:：Label（））；
这->txtBxReenterPassword=（gcnew System:：Windows:：Forms:：TextBox（））；
这->标签1=（gcnewsystem:：Windows:：Forms:：Label（））；
此->SuspendLayout（）；
//
//BTN创建新帐户
//
此->btnCreateNewAccount->位置=系统：：绘图：：点（147147）；
此->btnCreateNewAccount->Name=L“btnCreateNewAccount”；
这->btnCreateNewAccount->大小=系统：：绘图：：大小（126,23）；
此->btnCreateNewAccount->TabIndex=3；
此->btnCreateNewAccount->Text=L“创建新帐户”；
此->btnCreateNewAccount->UseVisualStyleBackColor=true；
this->btnCreateNewAccount->Click+=gcnewsystem:：EventHandler（this，&Create\u Account:：btnCreateNewAccount\u Click）；
//
//txtBxPassword
//
这个->txtBxPassword->位置=系统：：绘图：：点（147，68）；
此->txtBxPassword->Name=L“txtBxPassword”；
这->txtBxPassword->尺寸=系统：：图纸：：尺寸（126,20）；
此->txtBxPassword->TabIndex=1；
此->txtBxPassword->UseSystemPasswordChar=true；
//
//lblPassword
//
此->lblPassword->自动调整大小=true；
这个->lblPassword->位置=系统：：绘图：：点（26,73）；
此->lblPassword->Name=L“lblPassword”；
这->lblPassword->尺寸=系统：：图纸：：尺寸（56,13）；
此->lblPassword->TabIndex=12；
此->lblPassword->Text=L“密码：”；
//
//txtBxUsername
//
此->txtBxUsername->位置=系统：：绘图：：点（149,27）；
此->txtBxUsername->Name=L“txtBxUsername”；
此->txtBxUsername->尺寸=系统：：图纸：：尺寸（126,20）；
此->txtBxUsername->TabIndex=0；
//
//lblUsername
//
此->lblUsername->自动调整大小=true；
这->lblUsername->位置=系统：：绘图：：点（24,29）；
此->lblUsername->Name=L“lblUsername”；
这->lblUsername->大小=系统：：绘图：：大小（86,13）；
这->lblUsername->TabIndex=10；
此->lblUsername->Text=L“输入用户名：”；
//
//TXTBX重新输入密码
//
此->TXTBX重新输入密码->位置=系统：：绘图：：点（147100）；
此->txtBxReenterPassword->Name=L“txtBxReenterPassword”；
此->TXTBX重新输入密码->大小=系统：：绘图：：大小（126,20）；
此->txtBxReenterPassword->TabIndex=2；
此->TXTBX重新输入密码->使用系统密码C
public ref class Login {
private string username, password;
public string Username { get { return username; } }
public string Password { get { return password; } }
public void Show {
//Do your stuff and then user clicks OK
username = ...//soemthing like Textbox1.Text
password = ...//same here
}
}
public ref class Main{
public void method {
Login frmLogin = new Login();
frmLogin.Show();
MessageBox.Show("User: " + frmLogin.Username + " and Password: " + frmLogin.Password);
}
}