C / C++ / MFC

CDC*    DeviceContextPointer = CDC::FromHandle(lpDrawItemStruct->hDC);
CWnd*   DropDownWindowPointer = DeviceContextPointer->GetWindow();

// seed a random number generator with the current
// tick count.  we will use this as an iterator in
// the szRandomBytes array a bit later


srand(GetTickCount());


// set some values so that we only get legal characters
// from the szStringArray which will be used to fill
// the szRandomBytes array with legal characters


int nElementCount = 0;
int nElementValue = 32;


// set up our two arrays.  szStringArray gets filled 
// with legal character values.  szRandomBytes uses
// the values in szStringArray to generate a random
// character string that we can use for encryption


char szStringArray[95] = "";
char szRandomBytes[64] = "";


// filling the array

	
while ( nElementCount <= 94 )
{
	szStringArray[nElementCount] = nElementValue;
	nElementCount++;
	nElementValue++;
}


//  set iterator to zero


nElementCount = 0;


// pull 64 random characters out of the array
// to create our random string for encoding


while (nElementCount <=63)
{
	

	// get a random number


	int nRandomNumber = rand();

	
	// checking it out.  if its greater than 95
	// we divide it until its with the bounds of
	// the szStringArray.


	while (nRandomNumber >= 95)
	{
		nRandomNumber = nRandomNumber / 2;
	}


	// using nRandomNumber and szStringArray to assign
	// a value to the Element Number that szRandomBytes
	// is currently on up to a possible 64 characters


	szRandomBytes[nElementCount] = szStringArray[nRandomNumber];

	
	// incrementing the element count so
	// that the next value gets filled.

	
	nElementCount++;
}


// debug check


MessageBox(NULL, szRandomBytes, "Random String From Array", MB_OK);