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1)why we cant create more than one instance of the class
Derived from CWinApp
- 5 Answers
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Answer / shanmuga
Becoz,through the CWinApp object only ,the application
starts.. If there exist more than one object there occurs a
conflict to proceed with which object.
| Is This Answer Correct ? | 6 Yes | 1 No |
Answer / narayan
You theApp object is replace with new name;
Eg
CdlgtestApp theApp;
CdlgtestApp theApp3; // now this is your applcation obj
CdlgtestApp theApp3;
CdlgtestApp theApp; // No effect
| Is This Answer Correct ? | 6 Yes | 4 No |
Answer / jdp
Because the CWinApp class encapsulates the main() method
which, as you know, there can be only one instance of in
any application.
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / deepesh
because in constructor of CWinApp class
if it will called twice
ASSERT(AfxGetThread() == NULL);
will cause run time assertion
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / sirama
Because MFC implemented it as Singleton CWinApp::Ctor.
| Is This Answer Correct ? | 2 Yes | 7 No |
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