Hey there, just wondering if anyone could tell me where I can go to learn about using classes in external files (how to link them) and if anyone has a link to download a sample Windows Forms project using dll's (nothing specific, just a basic idea of how it all works together).
thanks,
Rob
------> Below added November 27th
Ok, here's what I'm playing around with:
<<This is a VC++ Windows Forms .NET project>>
My CMainDLL.cpp reads:
Code:
// This is the main DLL file.
#include "stdafx.h"
#include "CMainDLL.h"
And my CMainDLL.h reads:
Code:
// CMainDLL.h
#pragma once
using namespace System;
namespace CMainDLL
{
public __gc class Class1
{
// TODO: Add your methods for this class here.
public:
double trouble;
double dare;
};
}
I'm just seeing if I can use (for now until I get better at it) these stupid little things:
Form1.h reads:
Code:
#pragma once
#using "CMainDLL.dll"
namespace CMain
{
//using CMainDLL::Class1;
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
///
/// WARNING: If you change the name of this class, you will need to change the
/// 'Resource File Name' property for the managed resource compiler tool
/// associated with all .resx files this class depends on. Otherwise,
/// the designers will not be able to interact properly with localized
/// resources associated with this form.
/// </summary>
public __gc class Form1 : public System::Windows::Forms::Form
{
public:
Form1(void)
{
InitializeComponent();
}
protected:
void Dispose(Boolean disposing)
{
if (disposing && components)
{
components->Dispose();
}
__super::Dispose(disposing);
}
private: System::Windows::Forms::Button * button1;
private:
/// <summary>
/// Required designer variable.
/// </summary>
System::ComponentModel::Container * components;
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
void InitializeComponent(void)
{
this->button1 = new System::Windows::Forms::Button();
this->SuspendLayout();
//
// button1
//
this->button1->Location = System::Drawing::Point(112, 216);
this->button1->Name = S"button1";
this->button1->TabIndex = 0;
this->button1->Text = S"button1";
this->button1->Click += new System::EventHandler(this, button1_Click);
//
// Form1
//
this->AutoScaleBaseSize = System::Drawing::Size(5, 13);
this->ClientSize = System::Drawing::Size(292, 266);
this->Controls->Add(this->button1);
this->Name = S"Form1";
this->Text = S"Form1";
this->ResumeLayout(false);
}
private: System::Void button1_Click(System::Object * sender, System::EventArgs * e)
{
//
//Something like this, obviously it's not finished, just an example:
//
CMainDLL::Class1 Rob;
Rob.dare = 23.3;
}
};
}
and Form1.cpp reads:
Code:
#include "stdafx.h"
#include "Form1.h"
#include <windows.h>
using namespace CMain;
int APIENTRY _tWinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPTSTR lpCmdLine,
int nCmdShow)
{
System::Threading::Thread::CurrentThread->ApartmentState = System::Threading::ApartmentState::STA;
Application::Run(new Form1());
return 0;
}
When I compile my error reads:
error C2262: 'Rob': cannot be destroyed.
Seems like a lot of code to go through above...
Sure would be nice to be able to use the same code over and over instead of having to re-write it every time I add a new .cpp!
Is there a link somewhere that can teach me how to do this?
Thanks,
Rob Sitter.