VC++ Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

MFC (184)
ATL (26)
COM DCOM (53)
Win32API (35)

ActiveX (202)
VC++ AllOther (153)

VC++ Interview Questions

Questions Answers Views Company eMail

Explain transaction atomicity?

1 4562

Explain object pooling?

HCL,

1 6088

Explain JIT activation?

1 6187

Which namespace do the classes, allowing you to support COM functionality, are located?

2543

How do you make a NET component talk to a COM component?

TCS,

3 7866

Explain queued components.

2 5680

How does a DCOM component know where to instantiate itself?

1 4851

What kind of components can be used as DCOM servers?

1 6065

What are the different compatibility types when we create a COM component?

TCS,

1 6223

Which tool is used to configure the port range and protocols for DCOM communications?

1 7384

What MFC base classes provide support for ActiveX controls?

Wipro,

2 11022

What is subclassing?

2 19436

What four types of properties are supported by an ActiveX control?

1 5895

What interface must be supported by an ActiveX control?

2 7641

What is the difference between OnInitialUpdate and OnUpdate?

5 20148

Un-Answered Questions { VC++ }

Can I uninstall visual c++?

990

How to mark an activex control safe for scripting?

725

what message is sent to an application when the user presses the primary button?

1785

Suppose we have object B and aggregated object C (in- proc server), created by B. Can you access any interface of B from C?

964

What is activex in browser?

719

How to enable activex on mac safari?

763

How do I test activex filtering?

723

Is activex safe?

659

Explain what is IUnknown interface?

813

What changes does a control need to run in the Visual Basic 5.0 Control Creation Edition?

2086

Where is activex control in internet explorer?

676

How do I enable activex in edge?

742

What is activex dll in vb?

704

Suppose we have object b and aggregated object c (in- proc server), created by b. Can you access any interface of b from c? What?s the difference between aggregated and contained objects?

929

Explain pointer to the constant and constant pointer?

890

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