Fudley

I've asked a couple of questions. Do you have time to answer?

So...?

Is FireDAC required? I use UniDAC. I would prefer to not use binding, is that possible? How about an ad-hoc report using only code?

I keep meaning to look at this. Busy busy busy though...

ProcA and ProcB both call ProcC. Is there any way to know, without setting additional flags or passing parameters, who called ProcC (i.e. a WhoCalledMe function)?

Claude a. I. Recently I've had three opportunities to use Claude in my D12 Fmx development. 1. Needed to know how to scroll to a TListboxitem that was not visible. I had three different solutions off the net - none of which worked. Claude provided me with three different solutions, suggesting that #2 would be best for android. It worked a treat! I've been wrestling this one for a while... 2. I have about 50 color themes for this app. I needed help naming them. My wife just rolled her eyes. I uploaded a text list in the form: Theme Name 1: #Hexcolor1 #Hexcolor2 #Hexcolor3 #Hexcolor4 Theme Name 2: #Hexcolor1 #Hexcolor2 #Hexcolor3 #Hexcolor4 Claude provide a list of names almost instantly - and they were 90% spot on. (i.e. Wedgewood became Limestone Quarry) 3. I have a certain unique store/shopping type to represent, and was trying to layout a table structure for the store. I described the store and what it selling and what I needed to Claude. I got back a very long and detailed description, including the field structure and types. Anyway it saved me a lot of time.

Here's what Claude (the a.i.) suggested when I asked this question (and #2 does work best on android): ------------------------------ // Solution 1: Using ScrollToItem with proper timing procedure ScrollSelectedItemIntoView_Method1(lb: TListBox); begin if (lb.Selected <> nil) then begin // Use TThread.Queue to ensure the UI is updated before scrolling TThread.Queue(nil, procedure begin lb.ScrollToItem(lb.Selected); end); end; end; // Solution 2: Manual viewport positioning (most reliable) procedure ScrollSelectedItemIntoView_Method2(lb: TListBox); var ItemTop, ItemBottom, ViewportTop, ViewportBottom: Single; NewViewportY: Single; begin if (lb.Selected <> nil) and (lb.Count > 0) then begin // Get the selected item's position ItemTop := lb.Selected.Position.Y; ItemBottom := ItemTop + lb.Selected.Height; // Get current viewport bounds ViewportTop := lb.ViewportPosition.Y; ViewportBottom := ViewportTop + lb.Height; // Calculate new viewport position if needed NewViewportY := ViewportTop; // If item is above viewport, scroll up if ItemTop < ViewportTop then NewViewportY := ItemTop // If item is below viewport, scroll down else if ItemBottom > ViewportBottom then NewViewportY := ItemBottom - lb.Height; // Apply the new viewport position if NewViewportY <> ViewportTop then lb.ViewportPosition := PointF(0, NewViewportY); end; end; // Solution 3: Using item index with proper calculations procedure ScrollSelectedItemIntoView_Method3(lb: TListBox); var ItemIndex: Integer; ItemY: Single; ViewportHeight: Single; begin if (lb.Selected <> nil) then begin ItemIndex := lb.Selected.Index; ViewportHeight := lb.Height; // Calculate the Y position of the item ItemY := ItemIndex * lb.ItemHeight; // Check if item is outside viewport if (ItemY < lb.ViewportPosition.Y) or (ItemY + lb.ItemHeight > lb.ViewportPosition.Y + ViewportHeight) then begin // Center the item in the viewport lb.ViewportPosition := PointF(0, ItemY - (ViewportHeight / 2) + (lb.ItemHeight / 2)); end; end; end; // Solution 4: Enhanced method with smooth scrolling option procedure ScrollSelectedItemIntoView_Method4(lb: TListBox; SmoothScroll: Boolean = False); var ItemRect: TRectF; ViewportRect: TRectF; TargetY: Single; begin if (lb.Selected <> nil) then begin // Get item bounds ItemRect := lb.Selected.BoundsRect; // Get viewport bounds ViewportRect := RectF(0, lb.ViewportPosition.Y, lb.Width, lb.ViewportPosition.Y + lb.Height); // Check if item is fully visible if not ViewportRect.Contains(ItemRect) then begin // Calculate target scroll position if ItemRect.Top < ViewportRect.Top then TargetY := ItemRect.Top else if ItemRect.Bottom > ViewportRect.Bottom then TargetY := ItemRect.Bottom - lb.Height else TargetY := lb.ViewportPosition.Y; // Ensure we don't scroll beyond content bounds TargetY := Max(0, Min(TargetY, lb.ContentBounds.Height - lb.Height)); if SmoothScroll then begin // Smooth scroll using animation lb.AniCalculations.Animation := True; lb.AniCalculations.TouchTracking := []; lb.ViewportPosition := PointF(0, TargetY); end else begin // Immediate scroll lb.ViewportPosition := PointF(0, TargetY); end; end; end; end; // Usage examples: procedure TForm1.Button1Click(Sender: TObject); begin // Select an item programmatically if ListBox1.Count > 5 then begin ListBox1.ItemIndex := 5; // Then scroll it into view using any of the methods above ScrollSelectedItemIntoView_Method2(ListBox1); end; end; // Alternative: Create a helper method in your form procedure TForm1.SelectAndScrollToItem(lb: TListBox; ItemIndex: Integer); begin if (ItemIndex >= 0) and (ItemIndex < lb.Count) then begin lb.ItemIndex := ItemIndex; // Use a small delay to ensure selection is processed TThread.CreateAnonymousThread(procedure begin TThread.Synchronize(nil, procedure begin ScrollSelectedItemIntoView_Method2(lb); end); end).Start; end; end; // For Android-specific optimizations, you might want to disable animations // during scrolling to improve performance: procedure OptimizeForAndroid(lb: TListBox); begin lb.AniCalculations.Animation := False; lb.AniCalculations.TouchTracking := []; end; Key Points: Method 2 is the most reliable - it manually calculates viewport positioning and works consistently across different Android devices. Timing is crucial - Sometimes you need to use TThread.Queue or TThread.Synchronize to ensure the UI has updated before scrolling. Your original attempts failed because: ScrollBy doesn't work well with viewport positioning Direct ViewportPosition assignment needs proper bounds checking ScrollToItem can be unreliable without proper timing Android-specific considerations: Disable animations during programmatic scrolling for better performance Consider the device's screen density and scaling factors Test on different Android versions and screen sizes Recommended approach: Use Method 2 for most cases, or Method 4 if you want smooth scrolling. For Android deployment, consider disabling animations during programmatic scrolling to improve performance. The key difference from your attempts is proper bounds checking and ensuring the viewport position is calculated relative to the actual item positions rather than just multiplying by item height.RetryClaude can make mistakes. Please double-check responses.

FMX-Android-D12 Scroll TListbox selected item into view What I've tried (where lb is a TListbox and newindex is the new itemindex): 1. newindex := lb.selected.index; lb.scrollby(0.0,lb.itemheight*newindex) 2. oldindex := lb.ItemIndex; rowheight := lb.Selected.Height; lb.ViewportPosition := PointF(0,rowheight*oldindex) ; 3. lb.ScrollToItem(lb.Selected); Neither of these work. Please advise. Much thanks.

I tried "-doallmywork"but no effect.

Todd thanks so much that works like a charm! And just a general big thanks to everyone here who is so very helpful to an old dbase-foxpro-clipper-delphi-windows programmer!

Odd question (ok, so no change then ) It seems in order to update any files I'm deploying to the assets\internal\ folder I have to do the following: -on the android device, app storage, I do "clear cache", "clear data" and then "uninstall" -in D12, delete the files in question from deployment -in D12, add them back to deployment, setting the remote path to assets\internal\ ....build, run and Bobs your uncle Do I really need all these steps? Can this be streamlined at all?

I found this does not effect embedded TFrames, so I wrote a frame-specific TMyMainForm.ColorMyFramesWorld(aFrame:TFrame_) that does essentailly the same thing with the children of the frame. TMyMainForm.ColorMyWorld;

With serge_g's help: procedure TMyMainForm.ColorMyWorld; var ThisComp : TComponent; iComponentCount, iThis : integer; TextObj : TText; begin // gotstylelabel is a TLabel TextObj := TText(gotstylelabel.FindStyleResource('text')); if Assigned(TextObj) then begin iComponentCount := ComponentCount; {form componentcount} try for iThis := 0 to iComponentCount-1 do begin ThisComp := Components[iThis]; if ThisComp is TRectangle then TRectangle(ThisComp).Stroke.color := TextObj.Color else if ThisComp is TLine then TLine(ThisComp).Stroke.color := TextObj.Color else if ThisComp is TskSVG then TskSVG(ThisComp).svg.overrideColor := TextObj.Color ; end; except end; end; end

Serge_G Thanks so much! that worked perfectly!!!!

A number of controls are not themed, like TRectangle, TLine and the svg.overridecolor on TkSvg. I would like to set these to match the current theme. How can I find the currently used theme color of a control I know is themed, so I can then apply it to the non-themed controls at runtime? For instance TLabel themed fontcolor would do nicely to use for svg.overridecolor on TkSvg,. TLabel themed fontcolor would work (for me) for TRectangle.stroke TButtons themed fill color could be used for TRectangle.fill For me, this would save oodles of work. thanks all