I have a TImageEnMView and a TImageEnMIO on my form, connected to each other through the AttachedMView property. I've noticed in my code that sometimes I use the TImageEnMIO component and sometimes I use the MIO property of the TImageEnMView component. Are they, in fact, interchangeable? Does it matter which one I use in code? By setting properties on one, am I really doing it to the other?
Yes they are inter-changeable as long as they are connected. But why even use the TImagEnMIO component when it is already built into TImageEnMView? It is not necessary to use TImageEnMIO at all. If fact, nearly all the time I always use TImageEnMView.MIO... The same is true for TImageEnMView.Proc and TImageEnProc.
Generally I use TImageEnMIO by itself, not attached, to be able to load and access an image without it appearing in TImageEnMView.
The same this is also true for TImageEnView or TImageEnVect with respect to TImageENIO and TImageEnProc with either of these components.
In the long run it is better not to use an attached ImasgeEnMIO or an attached TImageEnProc, because your code will be easier to understand.
The reason I use a TImageEnMIO at all is because I can handle the OnAcquireBitmap event. I suppose if I want to handle the OnProgress event I can handle the multi-view's OnIOProgress event.
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TImageEnMIO vs. TImageEnMView.MIO
Posted - Mar 31 2014 : 12:37:22
