Help splitting string without STL

[geran6]

I have two functions below, one that renders a string at the give X,Y coordinate and one that attempts to plot the coordinates of each word in a string so that the string wraps inside a bounding rectangle.

The first function is the one I have trouble with. Right now it works somewhat but each new line is beginning with a space. If I uncomment line 37 it fixes it but then adds an extra space after the first word of each new line.

I know this should be very simple but I keep rewriting it and even when it looks like it should work exactly how I want I still end up with unwanted spaces. So what am I doing wrong here?

The GetTextExtentPoint32() function returns the width and height of the string(2nd parameter) as size.cx and size.cy. The 3rd parameter is the number of characters.

VOID WriteText(LPCWSTR text, RECT extent)
{
	SIZE size = {0};
	TEXTMETRIC tm = {0};

	HDC hdc = wglGetCurrentDC();

	GetTextMetrics(hdc, &tm);

	int cx = extent.left;
	int cy = extent.top;

	size_t len = wcslen(text);
	size_t start = 0;
	size_t i = 0;

	for (; i < len; i++)
	{
		if (L' ' == *(text+i))
		{
			// get width & height of next word
			GetTextExtentPoint32(hdc, text + start, i - start, &size);

			if (size.cx > (extent.right - extent.left))
				return;

			// new line
			if ((cx + size.cx) > extent.right)
			{
				cx = extent.left;
				cy += tm.tmHeight;

				if ((cy + tm.tmHeight) > extent.bottom)
					return;

				//start += 1;
			}

			WriteText(text + start, cx, cy, i - start);
			start = i;
			cx += size.cx;
		}
	}

	WriteText(text + start, cx, cy, i - start);
}


VOID WriteText(LPCWSTR text, INT x, INT y, INT len)
{
	if (0 == FontBase || NULL == text)
		return;

	glDisable(GL_TEXTURE_2D);

	glColor4f(FontColor[0], FontColor[1], FontColor[2], FontColor[3]);

	GLfloat pos[] = { (float)x, (float)y, 1.0f };
	glRasterPos3fv(pos);

	glPushAttrib(GL_LIST_BIT);
		glListBase(FontBase - 32);
		glCallLists(len, GL_UNSIGNED_SHORT, text);
	glPopAttrib();
}