Hi All !(CString Class)

[Bravoone_2006]

How can alow the user to enter only numbers lets say with "4" into CEditBox ! for ex: 41,42,411,42222 !!!!!! i have tried this : CString sCod; m_cod.GetWindowText(sCod); if(!sCod.Left(1).Compare("4")) { //something } else { AfxMessageBox("Incorect number"); } but is not working ! please help me !

Bravoone

[_AnsHUMAN_]

In the dialog editor right click the edit box and check the Number property to true.

Somethings seem HARD to do, until we know how to do them. ;-)_AnShUmAn_

[prasad_som]

Assign an integer variable to edit box.(See DDX_) And Use UpdateData accordingly.

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Prasad MS MVP -  VC++

[Anurag Gandhi]

Use Dialog Data Exchange or Validate. This will not allow the user to enter anything other than number. int iCod; void CYourClassName::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); DDX_Text(pDX, IDC_EDIT, iCod); DDV_MinMaxInt(pDX, iCod, 0, 1000); //Third and fourth parameter is min and max value. } Hope this will work. Anurag Gandhi.

[ajitatif angajetor]

you can try the _ttoi function to determine if the string is actually an integer. The function will return 0 if the string cannot be parsed as integer. So you should also check if user actually entered 0 in the CEditBox. "What if user enters something like 0000?" question still remains, but this is better than nothing :)

int val = _ttoi(sCod);
if (val == 0 && sCod != _T("0"))
{
   AfxMessageBox(_T("Incorrect number"));
}

[garfield185]

First of all, I haven´t found a Left member inside the CString class :confused: I would do that way: char sCod[20]; strcpy(sCod,m_cod.GetWindowText()); if (strcmp(sCod[0],"4")==0) { //Here write your code } else { MessageBox("Incorrect number"); } I hope it may help you! Good luck from Bilbao! (SPAIN) :-D

[Bravoone_2006]

all i want is to enter only numbers that have 4 first number for example 48956687 the first number is 4 !!!!!! Thank you !

Bravoone

[prasad_som]

garfield185 wrote:

First of all, I haven´t found a Left member inside the CString class

Here[^] it is.

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Prasad MS MVP -  VC++

[Bravoone_2006]

i have 2 errors to your code : 1)error C2661: 'GetWindowTextA' : no overloaded function takes 0 parameters 2)error C2664: 'strcmp' : cannot convert parameter 1 from 'char' to 'const char *' what is wrong ?

Bravoone

[garfield185]

Gosh!! Next time remember me to write the name of the function like this "Left" and not like this "left". I´m really ashamed... :doh: :laugh:

[Bravoone_2006]

Nope nothing,nothing is working i don t know what to do ! The first number in the string must be 4 ! this is a serious problem i dont expect to be so hard !

Bravoone

[_AnsHUMAN_]

If you want to let the user only enter the number's that start with 4 you would need to override the EN_CHANGE notification. When the user hits anything except a 4 for the first time just discard the value else continue. I hope I do get you correctly now and this helps you.

Somethings seem HARD to do, until we know how to do them. ;-)_AnShUmAn_

[_AnsHUMAN_]

void CBravooneTest::OnEnChangeEdit1()
{
	CString str;
        if(((CEdit*)GetDlgItem (IDC_EDIT1))->GetWindowTextLength()>0){
	
	((CEdit*)GetDlgItem(IDC_EDIT1))->GetWindowText (str);
	if(str.GetAt(0)!='4')
		((CEdit*)GetDlgItem(IDC_EDIT1))->SetWindowText("");
	}
}

See if this is what you need.

Somethings seem HARD to do, until we know how to do them. ;-)_AnShUmAn_

[GuyM]

the "Compare" function returns 0 (!!!) if the two strings are EQUAL, like strcmp(...)

[Hamid Taebi]

Hi Bravoone, I have a hardware question do you know about DVD players?

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WhiteSky

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