Re: Focus issue
How do I do that?
"David Wilkinson" <firstname.lastname@example.org> wrote in message
I use the routine below to draw a bargraph in a IDC_PIC window when a
button is clicked.
This routine workse fine but when the user opens another window that
overlaps this one
and then returns focus to this window the part of the bargraph that was
covered is blank.
Please show me how to fix this so when focus is returned to my app it is
int c=15, b=5, d, e=0, a;
d = (cr.Width()-20)/numkeys;
//draw 50% grid line
pControlDC->Rectangle(1, (cr.Height()/4), cr.Width()-1,
pControlDC->Rectangle(1, (cr.Height()/2), cr.Width()-1,
pControlDC->Rectangle(1, (cr.Height()/2)+(cr.Height()/4), cr.Width()-1,
for (b=0; b<numkeys; b++)
a = ((bar[b] * 10) / 10)+1;
pControlDC->Rectangle (c, cr.Height(), c+3, cr.Height()-a);
Thanks in advance
Make a derived picture control class and put the bargraph drawing code in
its OnPaint() handler.
Just derive a class, say CBarGraph, from CStatic and handle WM_PAINT
message. Then associate your IDC_PIC control with a member variable of
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