Thread: passing value from one dlg to another

Originally Posted by Elysia

Code:

// Search.cpp

void ASearch::OnBnClickedButton1()  //ok button to search
{		
        searchNumber();
	if (resultCount > 0)
	{
		Search_result result; // YOU ARE CREATING A NEW OBJECT
		result.DoModal();
	}
	else if (resultCount==0)
	{
		edittxt.SetWindowText(L"un ok");
	}
	UpdateData(TRUE);
	// TODO: Add your control notification handler code here
}

void Search::searchNumber()
{
	busDB bus_db;
	resultCount = 0;
	int dbsize = bus_db.getDbSize();

	CString editbxNo;
	edittxt.GetWindowText(editbxNo); 

	Bus AS_resultdb[817];
	Search_result as_result; // AGAIN, YOU ARE CREATING A NEW, LOCAL OBJECT.

	for (int i = 1; i <= 100; i++)
	{
		if (bus_db.getNumber(i).Find(editbxNo) >= 0)
		{
			details = bus_db.getRemark(i) + bus_db.getNumber(i) + bus_db.getTitle(i);
			as_result.details = details;
			UpdateData(TRUE);
			++resultCount;
		}
	}
}


//Search_result.cpp:

void ASearch_result::OnLbnSetfocusList5()   //listbox to start listing details
{
	// TODO: Add your control notification handler code here
	this->AS_result_list.AddString(details);
}

Your indentation is so horrible, I had to fix it for you.
Look where it's red - see? You're creating local objects! MFC works on the principle that all dialogs are objects - when they go our of scope, your dialog is destroyed.
So what are you doing wrong? You're creating a dialog class, assigning data to it, it then gets destroyed, along with all its data. Then you're creating a NEW dialog class and expect the data to still be there.

I suggest you read about classes, objects, references and pointers.
http://www.cprogramming.com/tutorial/

do u mean when i create the new dialogue object the data will be destroyed as well? i had correct the code as u pointed but the result dialogue is still empty, where is the problem? should i use pointer? and how? could u suggest some code to me? thanks you so much!!