Uwe,

Couple more questions...

1) i have created a TaskNamesDraw derived from QwtScaleDraw that draws the names on the y-axis, to get the same as in the other gannt thread. This is working as expected, except that only major ticks are drawn. For example if Yvalues range from 0 to 10, then only 0, 2, 4 etc. are drawn, but not the 1, 3, etc. How can i make it draw ALL labels ?

2) In stuff we talked about earlier we had the samples we provided to the plot defined as :
samples.append( QwtIntervalSample( 10, 8, 12 ) );
samples.append( QwtIntervalSample( 2, 3, 7 ) );
samples.append( QwtIntervalSample( 18, 17, 20 ) );

if i change this to :

samples.append( QwtIntervalSample( 10, 800000, 800100 ) );
samples.append( QwtIntervalSample( 2, 800400, 800500 ) );
samples.append( QwtIntervalSample( 18, 800600, 800700 ) );

i get 3 beautiful bars on the initial draw. If i zoom it it works perfectly;
When i zoom out (all the way to empty zoom stack), then the x-axis values are
somehow reset to 0...1000 and i loose my bars in the plot.
Is there some way to 'define' the overview x and y ranges ?

3) when zooming in, i only want x-axis zoom, not y-axis zoom.
How can i enforce this ?

Hope you can point me in the right directions that would be great.