U++ forum: Welcome to the forum

Re: view without pagebreaks? [message #9740 is a reply to message #9713]

Tue, 29 May 2007 08:28

exolon
Messages: 62
Registered: July 2006
Location: 53'21N 6'18W

Member

Thanks, INT_MAX makes sense. I just used some arbitrary fairly big number - I was worried it might have caused some weird side-effects if I set it too huge...

	Size huge = text.GetPage();
	huge.cy = PointDots(270000);
	text.SetPage(huge);

Caused things to eventually go weird after a lot of writing - perhaps 20,000 lines; a new page finally began, but all the text wrote on top of the same line from that point onwards, resulting in a mess of black at the start of the new, final page.

I avoided it by changing it into a FIFO log buffer, which I wanted anyway.

void BridgeLearner::AppendText(String message) {
	text.Disable();
	text.SetEditable();
	int length = text.GetLength();
	if(length > 32767) {
		text.Select(1, 0);
		text.RemoveText(1024);
		length -= 1024;
	}
	text.Select(length, 1);
	text.PasteText(ParseQTF(message));
	text.SetEditable(false);
	text.Enable();
}

Disable() and Enable() while writing to the buffer was necessary to stop the user clicking in the window and changing the cursor/write position. Smile

Incidentally, "text.Select(text.GetLength(), 0)" instead of "text.Select(text.GetLength(), 1)" caused segfaults for me sometimes. Not sure why that is.

These components are really well-encapsulated - doing the same thing in Win32 API calls would probably be pretty annoying. And this works exactly the same in Linux and Windows. I like UPP more every time I use it!

Report message to a moderator