Crash after password protected screensaver

Archives Forums/BlitzPlus Bug Reports/Crash after password protected screensaver

Grey Alien

(Posted 2007) [#1]

Hi, If you run a BPlus game in windowed mode (try this one http://www.greyaliengames.com/easterbonus.php) with a screensaver set to "On resume, password protect" it crashes after you enter the password. First I see the desktop drawn in the game window, then when I click the mouse I get a MAV.

Grey Alien

(Posted 2007) [#2]

Hmm I just made a simple test:

Graphics 800, 600, 32, 2
While Not KeyHit(1)
	Cls
	Text 10,10,"testing..."
	Flip
Wend

and this works, so it must be something more complex in my code. I'll investigate...

Grey Alien

(Posted 2007) [#3]

OK found out why I was getting a crash. Calling User32 GetCursorPos when the screensaver is showing returns null and my code didn't like that.

Anyway, it no longer crashes but it still shows the desktop on the window until you click it and then the game comes back but the backbuffer (or fontbuffer, I can't tell which) is corrupted.

Is there a way to tell if the screensaver has been showing and the backbuffer is corrupted? If so I could force a redraw. thanks

Stamm

(Posted 2010) [#4]

i dont really know but try to use

cmdexe=createprocess("system32\cmd.exe)  ;Open process as stream
writeline cmdexe,"tasklist"  ;calls a windows function telling you which tasks are currently performed
result$=readline(cmdexe)
if instr(result,name_of_screensaver) then redraw()

hint: createprocess is a nondocumented command; same as execfile, but returns stream handle so bb can interact with process and process is invisible (no window)
in fact, you just tell the cmd.exe to tell you the currently performed tasks, then you look if your screensaver is one of them using instr()