Hi,

I have form which has a lot of panels panels have controls and splitters (inside). The problem is with setting initial splitters position when user open form. I want that spliiters should have center position of its parent (parent = runtime created panel) but it is tricky because parents of splitters are not fully initialized and have Width and Height = 0 so I can't calculate splitter position on creation stage. Whole layout is based on Aligns.
I solved this by overriding AdjustSize/InvalidatePreferredSize method. There I'm checking if widths and heights are 0, if yes then setting up splitters. It is working fine but I'm wondering if there is more clear solution. What I'm looking is virtual method like
"ThisIsCalledWhenControlIsCompletelyAdjustedAndReadyWithAllChildrens" . Tried other methods like VisibleChanged, ChildHandlesCreated etc but without success

Regards
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Krzysztof wrote

What I'm looking is virtual method like "ThisIsCalledWhenControlIsCompletelyAdjustedAndReadyWithAllChildrens" . Tried other methods like VisibleChanged, ChildHandlesCreated etc but without success

Possible methods to try include:

Loaded
FormEndUpdated

If you need to change the Splitter position, then apparently the control is not completely adjusted.
Every time some layout property changes the LCL has to recompute the layout. To avoid overhead, you should react early instead of late.

If your splitter depends on the client size of its parent, then you can use the parent's DoOnChangeBounds/OnChangeBounds or AlignControls.

Mattias