TOPIC:

I want the scrollview content the start point at the left hand side. Where can I set the position?

PDFThumb.m
line 61
-(void)vGoto:(int)pageno
{
int dx;
int dy;
[m_view vGetDeltaToCenterPage:pageno :&dx :&dy];
[m_view vSetSel:pageno];
[self scrollRectToVisible:CGRectMake(self.contentOffset.x + dx/m_scale, self.contentOffset.y + dy/m_scale, m_w/m_scale, m_h/m_scale) animated:true];
}

do not set DeltaCenterPage ,i think this is will fix the issue you said,or you can modify this func

i change the contentOffSet to change the start position. If I scroll to right, the start point will return to center.

Hi,
If you want set scrollView thumbview left,
in PFDV.m line.1084, -(void)vLayout method
e.g set left = 0; will render thumbview at left of screen.