Managed C++/CLI

18-May-05 0:34

I have Form1 And Form2. Form2 is child. It is posible to Send from form1 to form2. But how can i send From form2 to Form1.

toxcct18-May-05 21:21

toxcct

18-May-05 21:21

~~SendMessage()~~

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Saksida Bojan18-May-05 23:08

18-May-05 23:08

I will not use SendMessage, because it is Win32 and MFC Command, I am using .NET Framework.

This thread was posted on Managed C++

Christian Graus18-May-05 21:34

18-May-05 21:34

Pass form2 a pointer to form1.

Christian Graus - Microsoft MVP - C++

Saksida Bojan18-May-05 23:06

18-May-05 23:06

If i pass poitner to Form1, Form1 would have access to form2. This is also working without passing a pointer.

If i pass Pointer of Form1 to Form2 As Form member, i can't accsess public function on form1

toxcct18-May-05 23:19

toxcct

18-May-05 23:19

yes you can :

into your form2, you create a member that is a pointer to a form...

then you allow the constructor of form2 to receive a pointer to a form (form1 for example) that will be copied in its member...

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Saksida Bojan19-May-05 8:04

19-May-05 8:04

Still i can't do it. Here is snipset from a code. Tell me what am i doing wrong.

Form1:

	private: System::Void Form1_Load(System::Object *  sender, System::EventArgs *  e)<br />
	{<br />
		 Form2 te = new Form2(this);<br />
		 Form2->Show();<br />
	}<br />
public: void test()<br />
	{<br />
		MessageBox::Show(S"Hello from Form1");<br />
	}

Form2:

public: //Constructor<br />
	Form2(Form *test)<br />
	{<br />
		InitializeComponent();<br />
		frmTest = test;<br />
	}<br />
Form *frmTest;

Form2::
i use
frmTest->test();

i got compiling error
c:\Projecti\t3\t33.h(86): error C2039: 'test' : is not a member of 'System::Windows::Forms::Form'

Please help me.

Christian Graus19-May-05 12:44

19-May-05 12:44

Is your first Form called Form ? Or is Form a base class ? If it's a base class, of course you can only see the base class members.

Christian Graus - Microsoft MVP - C++

Saksida Bojan19-May-05 20:23

19-May-05 20:23

It supposted to be name Form1. If i use like Form1 *test;. then i get verious errors.

Anonymous20-May-05 6:55

Anonymous

20-May-05 6:55

I had a similar problem. I just created a class that I pointed both forms to and used it to pass information between the forms.
So creat a new __gc class. From form1 create an object of that class. then point it to form2's object.
Pass is the class i'm using to pass information.
Declare Pass *pass

<br />
//Form1.h<br />
Pass *pass = new Pass();<br />
Form2 *input = new Form2();	<br />
input->pass1 = pass;<br />
input->ShowDialog();<br />
<br />
label_InputSomthing->Text = pass->somthing;<br />
Invalidate();<br />
<br />
//Form2.h<br />
Pass *pass1;<br />
pass1->something = textBox_something->Text;<br />
<br />
Close();<br />

Saksida Bojan20-May-05 9:10

20-May-05 9:10

How Does the Class Pass look like. can i also execute a function in Parent Form. It's easy to pass to Child Form than to Parent Form.

Lagwagon5620-May-05 10:35

Lagwagon56

20-May-05 10:35

Create a Basic __gc class and declare a String or int or whatever you want in it. Ex
String *whatToPass;

Saksida Bojan21-May-05 3:07

21-May-05 3:07

Well. thanks that worked. But how can call Function (In parent Window) from Child Form

Anonymous21-May-05 5:22

Anonymous

21-May-05 5:22

Put the function in the Class so both formms can use it. You could also make it static.

Thanks

Saksida Bojan21-May-05 10:14

Get Full File Name from HANDLE of API "CreateFile"

21-May-05 10:14

Thanks for the help. That realy helps a lot.

raf-sp17-May-05 11:25

raf-sp

17-May-05 11:25

Please,

How I get Full File Name(PATH and File Name) from HANDLE of API "CreateFile"??

Help...!!

Blocking Character

Saksida Bojan17-May-05 5:03

17-May-05 5:03

With TextBox i wan't to type Interger only.
I know to override key event. if i press a letter, i know how to handle it, but i don't know how can i block it

Christian Graus17-May-05 13:33

17-May-05 13:33

This is not a managed C++ question.

You need to catch the keyboard events, and (from memory ) then return TRUE instead of calling the base class. Then this tells MFC that you handled the event. There are actually controls that do this all over the web, including on this site.

Christian Graus - Microsoft MVP - C++

Saksida Bojan18-May-05 0:31

18-May-05 0:31

This is managed c++ question.

I am using .net framework 1.1. I don't use MFC application

Christian Graus18-May-05 12:39

18-May-05 12:39

Saksida Bojan wrote:
I am using .net framework 1.1. I don't use MFC application

Well, if you're creating a windowed MC++ app ( and the whole world would be wondering why ? ), then the answer is the same, the same messages are being sent and you need to intercept them just the same.

Christian Graus - Microsoft MVP - C++

Saksida Bojan18-May-05 23:12

18-May-05 23:12

private: System::Void txtID_KeyDown(System::Object * sender, System::Windows::Forms::KeyEventArgs * e)
{
}

1. This is KeyEvent. I can intercept the messege, but how to block it.

2. How can i return True and event handel has Void for returning.

3. When i press, this event is fired. But when this event is over, it add a char. i can't block that adding.

i found something on this webpage, but i don't want to write a dll.

Is this even posible. I had VB6 and was posible with this method. I prefear MC++

Christian Graus19-May-05 12:47

19-May-05 12:47

Saksida Bojan wrote:
How can i return True and event handel has Void for returning.

Obviously, you're using MC++ events, not the events that C++ supports natively.

KeyEventArgs has a property called 'Handled'. Set it to true. This will in effect do exactly what returning true in pure C++ would do, I would hope. If it's already true, then you need to catch the event further down, but I would hope not.

Saksida Bojan wrote:
i found something on this webpage, but i don't want to write a dll.

LOL - I don't see why you'd need to do that.

Saksida Bojan wrote:
Is this even posible. I had VB6 and was posible with this method. I prefear MC++

Yes, it's possible, but I was giving you pure C++ advice, and you're using .NET events. I've not used MC++, I don't see the point. Sorry if we muddled a bit to get to what I hope is the right answer.

Christian Graus - Microsoft MVP - C++

Thanks For Help

Saksida Bojan19-May-05 20:29