Mega Code Archive
How to fix the incorrect painting of an activex control, which occurs when a web
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How to fix the incorrect painting of an ActiveX control, which occurs when a web page is scrolled
Answer:
In Delphi 4, when an ActiveForm is larger than the browser window the control is on top of IE's scroll bars. In Delphi 5 they changed the code to fix this but didn't get it quite right resulting in the painting problem when scrolling. You need to edit the Delphi 5 AxCtrls unit as follows:
function TActiveXControl.SetObjectRects(const rcPosRect: TRect;
const rcClipRect: TRect): HResult;
var
WinRect: TRect;
begin
try
IntersectRect(WinRect, rcPosRect, rcClipRect);
{BEGIN FIX}
WinRect := Bounds(rcPosRect.left, rcPosRect.Top, WinRect.Right - WinRect.Left +
rcClipRect.Left - rcPosRect.Left, WinRect.Bottom - WinRect.Top +
rcClipRect.Top - rcPosRect.Top);
{END FIX}
FWinControl.BoundsRect := WinRect;
Result := S_OK;
except
Result := HandleException;
end;
end;
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