topic Re: Axmapcontrol is flicking in ArcObjects SDK Questions

Axmapcontrol is flicking

onurbeyaz — Tue, 29 Oct 2013 09:09:46 GMT

hi,

I m using Arcgis 10.1 engine.

On my program, when I refresh axmapcontrol, axmapcontrol is flicking. Please someone help me.

Re: Axmapcontrol is flicking

AlexanderGray — Tue, 29 Oct 2013 11:53:47 GMT

It depends on what you need to refresh. By refreshing everyting, everything gets redrawn so flickering will happen. If you look at the mapclass you can get from the map control, there is an IViewRefresh interface that has a partial referesh and other methods to better contain the scope of the refresh.

Re: Axmapcontrol is flicking

onurbeyaz — Sat, 11 Dec 2021 13:40:38 GMT

thank you for answer ,I tried but it doesn't work. Here is my code :

private void timer1_tick(object sender, EventArgs e)
{
if(checkBox_rotate_map.Checked)
{
axmapControl1.Rotation = angle;
angle = (angle+5 )%360;

axmapControl1.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewBackground,null,null);
}
else 
{
axmapControl1.Rotation=0;
}
}

Timer interval =100; and axmapcontrol size 1000x500;

Re: Axmapcontrol is flicking

AlexanderGray — Tue, 29 Oct 2013 18:04:34 GMT

ya, if you refresh the background, it is going to refresh everything.
Think of a map as a series of transparent layers one ontop of the others. If you want to refresh to top layer (foreground), no problem, just remove the top layer, throw it away and make a new one and place it on top. If you want to refresh a middle layer (geo selection for example), you throw away that layer and everything on top, graphics, graphics selection, foreground and redraw all those, you keep those bellow. The background is like the bottom layer so there is not much to save with a partial refresh, specially since you don't pass in an extent to limit it (null means refresh everything.) You might want to look at basemap layers to improve rendering.

Re: Axmapcontrol is flicking

onurbeyaz — Wed, 30 Oct 2013 14:19:12 GMT

but, When I tried this code with Arcgis 10.0 , it was running without flicking.