Calling a CDC* pDC function

Question

Hi, I'm new to the whole MFC thing and have probably a basic question.

Basically my problem is that I don't know how to call a function that I wrote.

What I have is a function

 

void CUserInterfaceView::MyFunc(CDC* pDC)

{ CRect tmpRect(100,100,120,120);

pDC->Rectangle(tmpRect); }

(Declared as 

virtual void MyFunc(CDC* pDC);)

and I want to call it while inside a loop in another function, but when I type it, it asks me to input a variable (the CDC* pDC something..).

And because the other function does not recognize the pDC (pointer?), I cant write it.

 

 

Hope this is clear enough, if not I will try to explain more. As I said, I'm really new to MFC (and C++ itself).

Thank You.

Answer 1

Basically my problem is that I don't know how to call a function that I wrote.

Bit of a dilemma there then :)

What I have is a function
void CUserInterfaceView::MyFunc(CDC* pDC) and I want to call it while inside a loop in another function, but when I type it, it asks me to input a variable (the CDC* pDC something..).
And because the other function does not recognize the pDC (pointer?), I cant write it.

Why/how have you written the function/method if you don't know how to
call it?

A method requiring a device context is usually going to be called as
part of drawing/painting code. Where are you trying to call it from?

Dave

Answer 2

 CDC* dc=GetDC();

MyFunc(dc); // maybe &dc

 

and your code seems will not work, you haven't setup brush yet.

 

CBrush pBrush(RGB(240,240,240));

pDc.selectobject(pbursh); // maybe &pbursh;

 

please check msdn, because you still need to release this pbrush

Answer 3

Thank you DU SIJUN! It worked.