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textBox1->Text into an int

thenewguy (140)
I dunno if there are a few ways, if so I'd like to know them all. But how do turn a string from a textBox into an int and also a char?

Thanks
Last edited on
Disch (13742)
1) Get the text from the textbox with GetWindowText

2) Convert to a number by doing any of the techniques outlined in this article:

http://cplusplus.com/articles/numb_to_text/
thenewguy (140)
Thank you!
thenewguy (140)
I got a code a while back, but it confused me to no end.
So, Just so I'm clear how would you do this?


#include <iostream>
#include <fstream>

int main()
{

int a;
a = textBox1->Text GetWindowText();

ofstream myfile;
myfile.open ("example.txt");
myfile << a;
myfile.close();

system("example.txt");

}
thenewguy (140)
bump
thenewguy (140)
bump
guestgulkan (2942)
Is that all the actual code you've got??

What is textBox1 ??
thenewguy (140)
lol no, but I didn't want to post it all. But the entire code is:

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#pragma once
#include <Windows.h>
#include <fstream>

namespace Idontfreakingknow {

	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 Form1
	/// </summary>
	public ref class Form1 : public System::Windows::Forms::Form
	{
	public:
		Form1(void)
		{
			InitializeComponent();
			//
			//TODO: Add the constructor code here
			//
		}

	protected:
		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		~Form1()
		{
			if (components)
			{
				delete components;
			}
		}
	private: System::Windows::Forms::Button^  button1;
	protected: 
	private: System::Windows::Forms::TextBox^  textBox1;
	private: System::Windows::Forms::TextBox^  textBox2;

	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->button1 = (gcnew System::Windows::Forms::Button());
			this->textBox1 = (gcnew System::Windows::Forms::TextBox());
			this->textBox2 = (gcnew System::Windows::Forms::TextBox());
			this->SuspendLayout();
			// 
			// button1
			// 
			this->button1->Location = System::Drawing::Point(191, 163);
			this->button1->Name = L"button1";
			this->button1->Size = System::Drawing::Size(75, 23);
			this->button1->TabIndex = 0;
			this->button1->Text = L"button1";
			this->button1->UseVisualStyleBackColor = true;
			this->button1->Click += gcnew System::EventHandler(this, &Form1::button1_Click);
			// 
			// textBox1
			// 
			this->textBox1->Location = System::Drawing::Point(164, 52);
			this->textBox1->Name = L"textBox1";
			this->textBox1->Size = System::Drawing::Size(100, 20);
			this->textBox1->TabIndex = 1;
			// 
			// textBox2
			// 
			this->textBox2->Location = System::Drawing::Point(164, 79);
			this->textBox2->Name = L"textBox2";
			this->textBox2->Size = System::Drawing::Size(100, 20);
			this->textBox2->TabIndex = 2;
			// 
			// Form1
			// 
			this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
			this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
			this->ClientSize = System::Drawing::Size(434, 212);
			this->Controls->Add(this->textBox2);
			this->Controls->Add(this->textBox1);
			this->Controls->Add(this->button1);
			this->Name = L"Form1";
			this->Text = L"Form1";
			this->ResumeLayout(false);
			this->PerformLayout();

		}
#pragma endregion
	private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) 
			 {
				 ///////////////////////////////////
				 ///////////////////////////////////
				 //  I don't know what to put here
				 ///////////////////////////////////
				 ///////////////////////////////////
			 }
	};
}
thenewguy (140)
And the goal is turn textBox1->Text in a char

Then I will do:

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char a[80]

fstream myfile;
myfile.open ("EXAMPLE.txt");
myfile <<  a; //the char
myfile.close();
guestgulkan (2942)
well this will save whatever is in the textbox to an output file.
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    private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) 
             {
                 System::String^   str = textBox1->Text;
                 System::IntPtr p2 = Marshal::StringToHGlobalAnsi(str);
                char* str2 = (char*)p2.ToPointer();
                
                //Do what you want with the char*
                ofstream myfile("example.txt" ); //open this file for output
                 myfile << str2 << endl;
                 myfile.close();

                //Now tidy up
                Marshal::FreeHGlobal(p2);

             }



Remember to add the following somewhere at the top of the file:

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#include <iostream>
#include <fstream>
using namespace std;


and
using namespace System::Runtime::InteropServices;
thenewguy (140)
Thanks, could this also be used to name the "myfile"?

ofstream myfile (str2);


???
guestgulkan (2942)
I believe so. Try it
thenewguy (140)
Thanks, but I dunno where to begin on trying to name the files. But instead, I'd like to use check boxes for names I commonly use.

However, I don't know how to use checkboxes? Would I do something like:

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if (checkBox1 != true)
{
System::String^   str = textBox1->Text;
                 System::IntPtr p2 = Marshal::StringToHGlobalAnsi(str);
                char* str2 = (char*)p2.ToPointer();
                
                
                ofstream myfile("newguy.bat" ); 
                 myfile << str2 << endl;
                 myfile.close();

               
                Marshal::FreeHGlobal(p2);
}
else
{
System::String^   str = textBox1->Text;
                 System::IntPtr p2 = Marshal::StringToHGlobalAnsi(str);
                char* str2 = (char*)p2.ToPointer();
                
                
                ofstream myfile("newguy32.bat" ); 
                 myfile << str2 << endl;
                 myfile.close();

               
                Marshal::FreeHGlobal(p2);
}


???
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