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Hi guys!
I'm begginer thus I'm really appreciate if you concern my question.
I got two dialog. The first one is Dlg1, the other is Dlg2.
There is a variable which calls root in Dlg1. It was declared when the Dlg1 was first appreared.
There is a variable which calls temp in Dlg2.
The problem is, I cant do:
temp=root;
Thanks for reading my question
hehe
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sonyama wrote: There is a variable
What's the type of the variable? Is it the object of the class.
sonyama wrote: which calls root in Dlg1
What's root?
sonyama wrote: There is a variable which calls temp in Dlg2.
???
If you can better explain your query or post some code some one here would help you in a better manner.
Somethings seem HARD to do, until we know how to do them.
 _AnShUmAn_
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typedef struct point
{
CString code;
CString name;
float previous;
float present;
point *next;
} pointer;
pointer *root = new pointer;
I want temp in Dlg2 has the same type and data as root!
thanks for concerning my question
hehe
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sonyama wrote: want temp in Dlg2 has the same type
You can pass a pointer from Dlg1 to Dlg2 and then access the variables of root directly in Dlg2.
Somethings seem HARD to do, until we know how to do them.
_AnShUmAn_
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I do have that kind of idea in mind but the problem is how to do so!
Thanks for concerning my question
hehe
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Create a pointer variable for Dlg1 in Dlg2.h. Also #include "Dlg1.h"
Say Dlg1 *pDlg1; // This is to be done in Dlg2.h
Add #include "Dlg2.h" in Dlg1.h
Now when you are giving a call to Dlg2 you can write
Dlg2 *p2=new Dlg2;
p2->pDlg1=this;
p2->DoModal();
Then you would be able to access the variables for root from Dlg2.
Somethings seem HARD to do, until we know how to do them.
_AnShUmAn_
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Dlg2 *p2=new Dlg2;
p2->pDlg1=this;
p2->DoModal();
I tried to put these code in Dlg1. Everything seems to be fine but the only line:
p2->pDlg1=this;
with the error message: "pDlg1 is not a member of Dlg2"
What should I do?
Thanks for concerning my question
hehe
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sonyama wrote: with the error message: "pDlg1 is not a member of Dlg2"
Probably you are missing to include a file some where. Either in Dlg1 or in Dlg2.
Check it out....
Somethings seem HARD to do, until we know how to do them.
_AnShUmAn_
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in PointerAppDlg dialog:
#include "stdafx.h"
#include "PointerApp.h"
#include "PointerAppDlg.h"
#include "Search.h"
typedef struct point
{
CString code;
CString name;
float previous;
float present;
point *next;
} pointer;
extern pointer *root = new pointer;
but in Search dialog:
it failed at
#include "stdafx.h"
#include "PointerApp.h"
#include "PointerAppDlg.h"
#include "Search.h"
pointer *root;
Thanks for concerning my question!
hehe
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hello;
i wanted to make my editbox transparent
i used the cxstatic class from Codeproject
for the static ones is was OK
but the problem is in updating time for example
the new time is redrown on the old one !
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fx9200 wrote: i wanted to make my editbox transparent
HBRUSH CYourDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);
CBrush m_Brush;
m_Brush.CreateStockObject (NULL_BRUSH);
if(pWnd->GetDlgCtrlID()==IDC_EDIT1)
{
pDC->SetBkMode (1);
return (HBRUSH)m_Brush;
}
return hbr;
}
Try this for the edit box. I think I answered the same question yesterday. Didn't this solve your problem.
Somethings seem HARD to do, until we know how to do them.
_AnShUmAn_
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See here[^] maybe it is some helpful to you
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Does no vtables depends on no of objects of the Virtualclass ?
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The number of vtables created are one for the base class and one for each of the subsequent classes that are derived from the base class.
Suppose Base and Derived are two classes. Class Derived is derived from Base.
then there would be two virtual tables that would be created. It does not depend on the number of objects.
Somethings seem HARD to do, until we know how to do them.
_AnShUmAn_
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that means can i assume that Virtual base class Contains one Vtable, And the Entire hierarchy contains one VTable.
Totally two VTables
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No!
Each of the classes that are derived from the base class would have a vtable of their own
Suppose Base, Derived1, Derived2 would be the three classes. Derived1 and Derived2 are classes that are derived from the base class. Now in this case there would be 3 vtables. One for base. One for Derived1 and one for Derived2.
Somethings seem HARD to do, until we know how to do them.
_AnShUmAn_
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Thabnkyou, for nice clarification, Can u suggest any links to further study About Vtables and Vptrs.
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Here is an article that explains virtual functions. Try googling for some articles on VTABLES and VPTR's.
Somethings seem HARD to do, until we know how to do them.
_AnShUmAn_
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_AnShUmAn_ wrote: Each of the classes that are derived from the base class would have a vtable of their own
I think, in case of single inheritance, all classes in heirarchy share same VTable.
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prasad_som wrote: I think, in case of single inheritance, all classes in heirarchy share same VTable
AFAIK, the compiler creates a separate vtable for each class; adds a pointer to this vtable, called the virtual table pointer or vpointer, (often the first member) and generates hidden code in the constructor for each class to initialize its vpointer to the address of the corresponding vtable. There is one vtable for a class that contains a virtual function and a vtable associated to each of the class that are derived from the base class containing that virtual function.
Somethings seem HARD to do, until we know how to do them.
_AnShUmAn_
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hello everyone. In a dialog based application, when i call a function in the initdialog()function, i get an error, saying-"Stack Overfolw". can anyone tell me what to do?? the same function works fine when run without the dialog box in a console. can anyone tell me what to do??
vijay
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which function ? does it handle the dialog memory ?
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