from vc++ 6.0 to vc++ 2008

[Cassie Tsui]

Hi,

I was using vc++ 6.0 long time ago and downloaded the 2008 express recently. When I tried to write a new MFC program, I found that the structure was changed a lot.

1. For example, function codes of OK_Click(when "ok" button is clicked) was move from .cpp to .h. Therefore i am not sure whether I should declare the global variables. Should I place them in location 1 or 2 (highlighted in green below)?

2. When I tried to declare an array with defined structure (highlighted in red below), it doesn't work! I have searched some posts in the net and tried syntax like array<route_data^>^route=gcnew array<route_data^> (100); but still failed. What I want is to build an array with 100 blank entries of several fileds named "type","name"...and will be filled with data after user click the "ok" button.


Please kindly help! Thank you.

--------------------------------------------

#pragma once
namespace TrafficReport
{

	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 System::Text;


	public ref class Form1 : public System::Windows::Forms::Form
	{
<location 1>
	public:
		Form1(void)
		{
			InitializeComponent();
		}

	protected:
		~Form1()
		{
			if (components)
			{
				delete components;
			}
		}
	private: System::Windows::Forms::Button^  EXIT;
	protected: 
	private: System::Windows::Forms::Button^  OK;
	private: System::Windows::Forms::Label^  label4;
			 ........

	private:
		
		/// Required designer variable.
<location 2>		String^ path;
		String^ initPath;
		String^ msg;
		ref struct route_data
		{
			String^ MSC;
			String^ Type;
			String^ Dir;
			String^ Name;
			int dev;
			float cap;
			String^ Date;
			String^ Hr;
			float Erl;
			float Loading;
		} route[100];
	
		System::ComponentModel::Container ^components;

#pragma region Windows Form Designer generated code

		void InitializeComponent(void)
		{
			this->EXIT = (gcnew System::Windows::Forms::Button());
			this->OK = (gcnew System::Windows::Forms::Button());
			this->label4 = (gcnew System::Windows::Forms::Label());
			....
		}
#pragma endregion

	private: System::Void OK_Click(System::Object^  sender, System::EventArgs^  e)
			 {
				 ...
			 }

	};
}

[Paul McKenzie]

Hi,

I was using vc++ 6.0 long time ago and downloaded the 2008 express recently. When I tried to write a new MFC program, I found that the structure was changed a lot.

That is because you didn't choose the right project type.

The code you posted is not C++, it is "Managed C++". This forum is dedicated to traditional C++ programming using Visual C++. The Managed C++ forum is dedicated to Managed C++.

So either change your project to use traditiional C++ programming, or go to the Managed C++ forum to ask questions pertaining to Managed C++.

Regards,

Paul McKenzie

[Cassie Tsui]

Oh! I chose file -> new -> project-> CLR -> windows form application, am i wrong? I just remember I used something like "single dialog" in VC 6.0. What should i choose to create a form like application and can use previous syntax like CString?

[Paul McKenzie]

Oh! I chose file -> new -> project-> CLR -> windows form application, am i wrong?

Yes. Do not choose CLR. Once you do that, you are no longer in the C++ world (or at least, in the world that is recognized in this forum).

Do you have the choice of Win32 project or MFC project?

I just remember I used something like "single dialog" in VC 6.0. What should i choose to create a form like application and can use previous syntax like CString?

If you're going from Visual C++ 6.0 to VC 2008, you don't want to do "forms". You want to continue to use MFC. Using "forms" means that you are going down a different path, and that path leads you to a different language known as Managed C++.

The C++ language knows nothing about things like this:

String^ path;

This is gibberish to C++.

Regards,

Paul McKenzie

[Cassie Tsui]

There is choice for win32 project, but the checked box for MFC is disabled. I think it is excluded from the express version. I think I have to stay on my old 6.0, anyway thank you for your help.

[CNemo]

There is choice for win32 project, but the checked box for MFC is disabled. I think it is excluded from the express version. I think I have to stay on my old 6.0, anyway thank you for your help.

Oh, you didn't know.

The Express Edition doesn't support MFC but it does support WIN32 API. Winforms is part of .NET and not MFC.

Unfortionatly, you had to learn the hard way.

But if you want to get a taste for MFC in a 2008 environment you can download one of the VS2008 trial editions and evaluate it for 3 mo. ... then you can do all the MFC you want.

[Cassie Tsui]

Hi,

I was using vc++ 6.0 long time ago and new in CLI. When I tried to write a "form" like application, I found that the structure is quite different from MFC in VC 6.

1. For example, function codes of OK_Click(when "ok" button is clicked) was move from .cpp to .h. Therefore I am not sure whether I should declare the global variables. Should I place them in location 1 or 2 (highlighted in green below)?

2. On the other hand, how can I declare and initialize a global variable? When I tried to declare an array with defined structure (highlighted in red below), it doesn't work! What I want is to build an array with 100 blank entries of several fileds named "type","name"...and will be filled with data later. Even simple initialization like String ^a=”hello” is not work if I don’t put them inside a function.

Please kindly help! Thank you.

--------------------------------------------

#pragma once
namespace TrafficReport
{

	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 System::Text;


	public ref class Form1 : public System::Windows::Forms::Form
	{
<location 1>
	public:
		Form1(void)
		{
			InitializeComponent();
		}

	protected:
		~Form1()
		{
			if (components)
			{
				delete components;
			}
		}
	private: System::Windows::Forms::Button^  EXIT;
	protected: 
	private: System::Windows::Forms::Button^  OK;
	private: System::Windows::Forms::Label^  label4;
			 ........

	private:
		
		/// Required designer variable.
<location 2>		String^ path;
		String^ initPath;
		String^ msg;
		[COLOR="Red"]ref struct route_data
		{
			String^ MSC;
			String^ Type;
			String^ Dir;
			String^ Name;
			int dev;
			float cap;
			String^ Date;
			String^ Hr;
			float Erl;
			float Loading;
		};
array<route_data^>^route=gcnew array<route_data^> (100)
	
		System::ComponentModel::Container ^components;

#pragma region Windows Form Designer generated code

		void InitializeComponent(void)
		{
			this->EXIT = (gcnew System::Windows::Forms::Button());
			this->OK = (gcnew System::Windows::Forms::Button());
			this->label4 = (gcnew System::Windows::Forms::Label());
			....
		}
#pragma endregion

	private: System::Void OK_Click(System::Object^  sender, System::EventArgs^  e)
			 {
				 ...
			 }

	};
}

[cilu]

[ redirected & merged ]