Numeric edit and numeric spin controls

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In my application I needed an edit control which accepts only numeric numbers. In many science applications this is indispensable, but it is actually not implemented in MS-Visual C/C++. It is not difficult to implement this control and I see that some people implemented it. In my own code, some new features were enriched as error messages and range defines, etc.
Note: to use the CNumEdit class properly, the ES_NUMBER, ES_MULTILINE must not be set.

Another control added in my work is CNumSpinCtrl which enables using a spin control as a numeric one which is also not implemented in MFC.

Note: to use the CNumSpinCtrl class properly, the ES_AUTOBUDDY, ES_SETBUDDYINTEGER must not be set.

Your suggestions are appreciated. Enjoy!

class CNumEdit : public CEdit

{

	DECLARE_DYNAMIC(CNumEdit)

public:

	CNumEdit();

	virtual ~CNumEdit();

	enum {VALID = 0x00, OUT_OF_RANGE = 0x01, INVALID_CHAR = 0x02};

	virtual void ChangeAmount(int step);

	virtual float GetDelta();

	virtual void SetDelta(float delta);

	virtual void GetRange(float &min, float &max)const;

	virtual void SetRange(float min, float max);

	virtual void Verbose(BOOL v);

	virtual BOOL Verbose()const;

	virtual int IsValid()const;

	virtual int IsValid(const CString &str)const;

	virtual BOOL SetValue(float val);

	virtual float GetValue()const;

protected:

	virtual CString& ConstructFormat(CString &str, float num);

	BYTE m_NumberOfNumberAfterPoint;

	BOOL m_Verbose;

	float m_Delta, m_MinValue, m_MaxValue;

	DECLARE_MESSAGE_MAP()

};
class CNumSpinCtrl : public CSpinButtonCtrl

{

	DECLARE_DYNAMIC(CNumSpinCtrl)

public:

	CNumSpinCtrl();

	virtual ~CNumSpinCtrl();

	virtual void SetDelta(float delta);

	virtual float GetDelta();

	virtual void SetBuddy(CNumEdit *edit);

	virtual CNumEdit* GetBuddy() const;

	virtual void GetRange(float &lower, float& upper ) const;

	virtual void SetRange(float nLower, float nUpper );

	virtual float GetPos();

	virtual void SetPos(float val);

};

Download demo project – 16 KB

Date Last Updated: May 17, 1999