[DUG] Capturing mouse wheel

[Phil Middlemiss]

Except that it's not what is happening. I put a break point on all the 
calls to SetFocus and none of them were called.

Phil.

Phil Middlemiss wrote:
> Good guess. That's exactly what has happened. Our component is still 
> getting the mouse move message so I'll see if I can fix this problem 
> by sending WM_KILLFOCUS to the TVirtualTree (which it seems it 
> responds to).
>
> Conor Boyd wrote:
>> I suspect the other component is calling the Win API method SetCapture,
>> which according to the API help:
>>
>> "The SetCapture function sets the mouse capture to the specified window
>> belonging to the current thread. Once a window has captured the mouse,
>> all mouse input is directed to that window, regardless of whether the
>> cursor is within the borders of that window. Only one window at a time
>> can capture the mouse. "
>>
>> Not sure what you do about it, but maybe that info is of some use.
>>
>> HTH,
>>
>> Conor
>>
>> -----Original Message-----
>> From: delphi-bounces at ns3.123.co.nz [mailto:delphi-bounces at ns3.123.co.nz]
>> On Behalf Of Phil Middlemiss
>>
>> We have a component that can use the mouse wheel - unfortunately, we
>> also use another component (not ours) that uses the mouse wheel. The
>> standard windows convention seems to be that whatever window has the
>> focus gets to process the message first. So even though the mouse is
>> over our component when the mouse wheel is rolled, the other component
>> gets the message.
>>
>> I seem to remember some time ago seeing how to replace the main
>> TApplication message handler with your own, but can't remember how 
>> now. Is this possible? What is the technique?
>>
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>>
>>
>>
>>   
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