nanogui: Thread: flickering in microwindows

Sir,
         we r using ecos in our project(Processor- SH7729-32 bit ).using 
microwindows we just want to implement explorer.we r using file 
system(read only ) & touchscreen in microwindows.we r using L- Buttondown 
action in mousedriver program(which will send X& Y coordinates).it is 
working fine,
 
        But the problem is our screen(LCD-SED13300-1 bit) is flickering if 
we touch.we have listboxes,mutiline edit box,single line edit 
box,buttons.if we click file in listbox we r opening & displaying in edit 
box.
if we touch any one of the child controls the whole screen flickers.but 
pgm flow is calling only WM_PAINT of listbox only.

 we have implemented blit function also in our application (main window)& 
each child controls.after that it has improved little extent.


if we click the whole screen is flickering(even if we click only 
listbox).if we click on scroll button of editbox the wholescren is 
flickering.if we click in listbox flickering is more(highlighted).we don't 
have clear picture of how they have implented listbox sorce code.but we 
have understood something.but problem is somethingelse

   bec we have checked with only single winow.& we have tried to 
paint(using drawtext) only part of window .but that time also screen is 
flickering.

 can anyone guide & tell the solution to mavoid flickering.


thanks in advance

 regards
    vijay.j ,praveen.g.r

 

: if we click the whole screen is flickering(even if we click only
: listbox).if we click on scroll button of editbox the wholescren is
: flickering.if we click in listbox flickering is more(highlighted).we don't
: have clear picture of how they have implented listbox sorce code.but we
: have understood something.but problem is somethingelse

I'm not quite sure what the problem may be here, it could be
possibly related to your framebuffer implementation itself?

I would suggest running the various demo programs, and
seeing whether you find any flicker or not.  The mdemo
program is win32 API, like your programs, but I would like
you to run the various *.sh demos as well.  If these don't
flicker, then likely you've got issues with your own code,
rather than internal to Microwindows.

No internal code of Microwindows redraws more than it
must, and there shouldn't be any flickering.

Regards,

Greg




:
:    bec we have checked with only single winow.& we have tried to
: paint(using drawtext) only part of window .but that time also screen is
: flickering.
:
:  can anyone guide & tell the solution to mavoid flickering.
:
:
: thanks in advance
:
:  regards
:     vijay.j ,praveen.g.r
:
: