Thread: Help using Vectors

Hey,
I want to fill a vector usign the following code:

Code:

for(i=0; i<FAD.nExpected; i++)
	{
		
		pGetEdit[i] = (CEdit*) GetDlgItem(i+100);

		int len = pGetEdit[i]->LineLength();

		pGetEdit[i]->GetLine(1,str.GetBuffer(len), len);

		if(len != 0)
			vars.vectParmSelected.push_back(str);

	}

aside from the visual part, the coe fails at run-time saying that the memory could not be read if I have the if statement. If I remove the if statement and copy every entry without checking into the vector it works fine. len represents the length of a line copied into str. So if there is nothign there len=0 and I don't want to copy it into the vector.
Is there another way to do it? or what am I doing wrong?

This is a problem with your CString. Do you need to call ReleaseBuffer? Is your vector holding CStrings or LPTSTR or something else - because if it is holding a pointer then there will be a problem when the value of the pointer is changed.

I actually rewrote that vector type. Here's the new thing, and sorry I forgot to post the variable def's.

Code:

structLink templink;

	CEdit* pGetEdit[512];
	
	for(i=0; i<FAD.nExpected; i++)
	{
		
		pGetEdit[i] = (CEdit*) GetDlgItem(i+100);

		int len = pGetEdit[i]->LineLength();

		pGetEdit[i]->GetLine(1,templink.ParamName.GetBuffer(len), len);
		templink.Index = i;

		if(len != 0)
			vars.vectParmSelected.push_back(templink);

	}

where

Code:

struct structLink
{
	CString ParamName;
	int Index;
};

class gVars        
	{
	public:

		std::vector < structBafParam > vectBP;
		std::vector <structLink> vectParmSelected;
		char hEngName[13];
..............

It only fails if len ever has a vlue of 0.