#1486 Invalidate CallTip window before show when it's already created

[Zufu Liu]

When CallTip window is already created, ScintillaBase::CallTipShow() will only move it without drawing new content when new size is same as previous. added InvalidateRect() to ScintillaWin::CreateCallTipWindow() request redraw.

+   } else {
+       ::InvalidateRect(HwndFromWindow(ct.wCallTip), nullptr, FALSE);

[Neil Hodgson]

        ct.wCallTip.InvalidateAll();

[Zufu Liu]

Yeah, that's where my code come from.
maybe InvalidateAll() need to be placed in ScintillaBase::CallTipShow() as ScintillaQt::CreateCallTipWindow() or other platforms may have same problem.

[Neil Hodgson]

Committed with [0f2095].

[Zufu Liu]

I was thought add ct.wCallTip.InvalidateAll(); before ct.wCallTip.Show(); to avoid immediate redraw after show.

[Neil Hodgson]

I don't think that the draw will happen until returning to the message loop. Here is a trace switching from "20 " to "39 " in monospaced text:

PaintContents "20 " draw=true
CallTipShow {x=57.060743331909180 y=32.000000000000000 } 0x0000020bf936c508 "39 "
PaintContents "39 " draw=false
SetPositionRelative
Show
Invalidate
PaintCT
PaintContents "39 " draw=true

[Zufu Liu]

OK, got it.