Convert VC++6 to VC++7 -- (2)

Below is a laundry list of the problems and solutions.

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Compiler Error: fatal error C1083: Cannot open include file: 'fstream.h': No such file or directory
Solution: change include from fsream.h to fstream, and add using namespace std;
Related problems: ios::nocreate and ios::noreplace are deprecated. ios::nocreate is replace by ios::in

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CFile::ReadHuge() and CFile::WriteHuge() are obsolete. Use CFile::Read() and CFile::Write() instead.

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Replace &afxChNil by empty string "".

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Compiler Error:

• error C2059: syntax error : '<'
• error C2143: syntax error : missing ';' before '<'
• error C2182: 'ConstructElements' : illegal use of type 'void'
• error C2988: unrecognizable template declaration/definition

Solution: ConstructElements and DestructElements are deprecated. Remove definition of these functions. Ref: Microsoft KB 318734

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WINVER default changed to 0x0501 (Windows XP). If your program still want to support Windows 2000, the the following line must be included in the project:
#define WINVER 0x0400

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CPropetySheetEx, CPropertyPageEx are deprecated, they are included back to CPropertySheet and CPropertyPage.

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CString s(45) no longer compiles. Because CString is changed to template based function with more constructors. This definition has ambiguous overloaded constructors. Change to CString s((TCHAR)45).

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VC++7.1 has stricter type requirements. For example, conversion from HANDLE to int and uint is not allowed.

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Compiler Error:
error C2668: 'sqrt' : ambiguous call to overloaded function
Solution:
sqrt, fabs, log and other CRT math functions support both double and float type now. An integer input to these functions will cause the error above.
Example:

int i = 10;
float f = sqrt(i); //error C2688
float f = sqrt((float)i); //compiles ok

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Compiler Error:
error C2440: 'static_cast' : cannot convert from 'void (__thiscall XXXXXXXX::* )(void)' to 'void (__thiscall XXXXXX::* )(NMHDR *,LRESULT *)'
Solution:
Function signature of event handler OnKillfocus was changed from void Func(void) to void Func(NMHDR*, LRESULT*).

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