prohbit shift key in edit box............

ani_ikram

i want to make user to only input numbers (1 to so on) but not spectial charters using shift like (%,#,@,!,^,&,*,()) etc

Naveen

ani_ikram wrote:

i want to make user to only input numbers

You can handle the WM_CHAR message of edit control and inside that, you can check, whether the character is number or not. If it is not number, just return from that function, with out calling the base class'( CEdit ) function.

nave [OpenedFileFinder] [My Blog]

ani_ikram

can u plz send me code so that i can get idea

SandipG

If you do not want floating point numbers you can set the Numbers only property in resource editor. I hope it helps.

Regards, Sandip.

Naveen

The below code will block the special charcters but permits alphabets and numbers

void EditEx::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags)
{
if( !isdigit(nChar) && !isalpha( nChar ))
{
return;
}
CEdit::OnChar(nChar, nRepCnt, nFlags);
}

nave [OpenedFileFinder] [My Blog]

ani_ikram

void EditEx::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags) { if( !isdigit(nChar) && !isalpha( nChar )) { return; } CEdit::OnChar(nChar, nRepCnt, nFlags);} i hv used this method but its also restricting to enter float value while i want to enable float numbers as well plz tell me how to do it

Naveen

ani_ikram wrote:

well plz tell me how to do it

:doh: Just modify the checking as follows if( !isdigit(nChar) && !isalpha( nChar ) && nChar != _T('.'))

nave [OpenedFileFinder] [My Blog]

ani_ikram

thanks alot nave u really solved my problem

Naveen

You are welcome... :)

nave [OpenedFileFinder] [My Blog]

Le rner

if you want to use only numbers than you can use number property of EditBox.

IN A DAY, WHEN YOU DON'T COME ACROSS ANY PROBLEMS - YOU CAN BE SURE THAT YOU ARE TRAVELLING IN A WRONG PATH

Cedric Moonen

BTW, if you only wanted to have an edit control into which you can enter a float value, there are hundreds of article about that subject, you only have to search for it on codeproject. Here[^] is an example. The problem with your approach is that it is not secure: nothing prevents the user to enter a dot several time. So, instead of reinventing the wheel and rewriting the validation code all over again(it's not that trivial because, you have also to take into account that the user might delete some characters, change the cursor location, ...) why don't you look for a control that does this already ?

Cédric Moonen Software developer
Charting control [v1.5] OpenGL game tutorial in C++

Le rner

if you want to block Special character than you can subclass your edit control and handle OnChar function like this.

void CMyEdit::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags)
{
char szBuffer[100] = {0};
short int nCounter = 0;
short int iTemp = 0;
int iStartChar = 0;
int iEndChar = 0;

if(nChar != VK\_BACK && nChar != VK\_TAB )
{
	if(nChar != '.' (nChar < '0' || nChar > '9') 
		 && (nChar < 'a' || nChar > 'z')&&(nChar < 'A' || nChar > 'Z'))//here write those character you want to enter
	{
		return;
	}

		GetWindowText((LPTSTR)szBuffer, sizeof(szBuffer));
		
}

CEdit::OnChar(nChar, nRepCnt, nFlags);

}

IN A DAY, WHEN YOU DON'T COME ACROSS ANY PROBLEMS - YOU CAN BE SURE THAT YOU ARE TRAVELLING IN A WRONG PATH

David Crow

Do you have an aversion against isalpha() and isdigit()?

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