Click here to Skip to main content
15,920,438 members
Home / Discussions / C / C++ / MFC
   

C / C++ / MFC

 
GeneralRe: MFC's message map, no need of &? Pin
Peter_in_278025-Aug-11 22:53
professionalPeter_in_278025-Aug-11 22:53 
GeneralRe: MFC's message map, no need of &? Pin
Albert Holguin26-Aug-11 5:03
professionalAlbert Holguin26-Aug-11 5:03 
SuggestionRe: MFC's message map, no need of &? [modified] Pin
Member 782758330-Aug-11 21:20
Member 782758330-Aug-11 21:20 
GeneralRe: MFC's message map, no need of &? Pin
Albert Holguin31-Aug-11 8:16
professionalAlbert Holguin31-Aug-11 8:16 
QuestionGetCharABCWidthsFloat returns different values on XP, Vista and Windows 7 Pin
transoft25-Aug-11 11:12
transoft25-Aug-11 11:12 
AnswerRe: GetCharABCWidthsFloat returns different values on XP, Vista and Windows 7 Pin
Code-o-mat25-Aug-11 23:52
Code-o-mat25-Aug-11 23:52 
GeneralRe: GetCharABCWidthsFloat returns different values on XP, Vista and Windows 7 Pin
transoft26-Aug-11 2:47
transoft26-Aug-11 2:47 
GeneralRe: GetCharABCWidthsFloat returns different values on XP, Vista and Windows 7 Pin
transoft26-Aug-11 2:50
transoft26-Aug-11 2:50 
GeneralRe: GetCharABCWidthsFloat returns different values on XP, Vista and Windows 7 Pin
Code-o-mat26-Aug-11 3:03
Code-o-mat26-Aug-11 3:03 
GeneralRe: GetCharABCWidthsFloat returns different values on XP, Vista and Windows 7 Pin
transoft26-Aug-11 4:16
transoft26-Aug-11 4:16 
QuestionRe: GetCharABCWidthsFloat returns different values on XP, Vista and Windows 7 Pin
MicroVirus26-Aug-11 6:00
MicroVirus26-Aug-11 6:00 
AnswerRe: GetCharABCWidthsFloat returns different values on XP, Vista and Windows 7 Pin
transoft26-Aug-11 6:11
transoft26-Aug-11 6:11 
GeneralRe: GetCharABCWidthsFloat returns different values on XP, Vista and Windows 7 Pin
jeron126-Aug-11 7:48
jeron126-Aug-11 7:48 
GeneralRe: GetCharABCWidthsFloat returns different values on XP, Vista and Windows 7 Pin
transoft26-Aug-11 8:00
transoft26-Aug-11 8:00 
AnswerRe: GetCharABCWidthsFloat returns different values on XP, Vista and Windows 7 Pin
Charles Oppermann26-Aug-11 10:35
Charles Oppermann26-Aug-11 10:35 
GeneralRe: GetCharABCWidthsFloat returns different values on XP, Vista and Windows 7 Pin
enhzflep26-Aug-11 15:52
enhzflep26-Aug-11 15:52 
GeneralRe: GetCharABCWidthsFloat returns different values on XP, Vista and Windows 7 Pin
transoft26-Aug-11 16:51
transoft26-Aug-11 16:51 
QuestionUsing MFC to Host a WebBrowser Control Pin
geofftop25-Aug-11 3:10
geofftop25-Aug-11 3:10 
Questionhow compiler differentiates inline virtual function? [modified] Pin
yogish29325-Aug-11 2:57
yogish29325-Aug-11 2:57 
AnswerRe: how compiler differentiates inline virtual function? Pin
CPallini25-Aug-11 3:27
mveCPallini25-Aug-11 3:27 
GeneralRe: how compiler differentiates inline virtual function? Pin
Niklas L25-Aug-11 21:36
Niklas L25-Aug-11 21:36 
GeneralRe: how compiler differentiates inline virtual function? Pin
CPallini25-Aug-11 21:50
mveCPallini25-Aug-11 21:50 
GeneralRe: how compiler differentiates inline virtual function? Pin
Stefan_Lang25-Aug-11 22:31
Stefan_Lang25-Aug-11 22:31 
There are two rather common examples where virtual functions are resolved statically, and therefore can be inlined without problem:

1. Explicitely calling the base class implementation
2. Virtual destructors. The compiler will automatically create a chain of calls to destructors according to the inheritance chain. These are resolved statically. The only thing that may be resolved dynamically (at runtime) is the top level call, and even that only if the compiler cannot determine the actual class at compile time
class Shape {
   bool state;
public:
   inline virtual void initialize() {
      state = false;
   }
   inline virtual ~Shape() {} // will always be resolved statically!
};

class Square : public Shape {
   float width;
public:
   virtual void initialize() {
      Shape::initialize(); // resolved statically - this can be inlined!
      width = 0.;
   }
   ~inline virtual ~Square() {} // may be resolved statically
};

int main() {
   Shape* pShape = new Square;
   pShape->initialize;
   delete pShape; // calls pShape->Shape::~Shape() and then pShape->Square::~Square()
                  // this can be resolved statically since the compiler at this point knows the type
   return 0;
}

AnswerRe: how compiler differentiates inline virtual function? Pin
Stefan_Lang25-Aug-11 3:34
Stefan_Lang25-Aug-11 3:34 
QuestionHow to get attachment filename without download attachment file? Pin
R_K25-Aug-11 2:39
R_K25-Aug-11 2:39 

General General    News News    Suggestion Suggestion    Question Question    Bug Bug    Answer Answer    Joke Joke    Praise Praise    Rant Rant    Admin Admin   

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.