Dalla versione XE7 di Delphi sono disponibili i componenti per gestire Bluetooth Classico e LE. Con Firemonkey è abbastanza semplice creare anche un server bluetooth. Provando le mie applicazioni sul Raspberry PI3 dove Federico ha montato Marshmallow mi son accorto che se il BT non è disponibile sul device l’applicazione si schiantava. Per ovviare a…
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To check with Delphi / Firemonkey if the screen is in Landscape or Portrait mode i use the FMXPlatform library as in the example: uses FMXPlatform; … procedure TForm2.FormResize(Sender: TObject); var ScreenService: IFMXScreenService; begin if TPlatformServices.Current.SupportsPlatformService(IFMXScreenService, IInterface(ScreenService)) then begin if ScreenService.GetScreenOrientation in [TScreenOrientation.soPortrait, TScreenOrientation.soInvertedPortrait] then ShowMessage(‘Portrait Orientation’) else Begin ShowMessage(‘Landscape Orientation’); End; end; end;
With Delphi , to the Seattle version , when you scale a bitmap image to enlarge using the command “Canvas.DrawBitmap(OiginalBitmap, RectF(0, 0, OiginalBitmap.Width, OiginalBitmap.Height), RectF(0, 0, Width, Height), 1, False);” the interpolation cant be disabled. A way to eliminate the problem is to manually scale the bitmap directly creating an image pixel by pixel .…
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To enable and disable all triggers of a database i do two procedure : Enabling all database trigger: create procedure SP_ENABLE_ALL_TRIGGER as begin /* Procedure Text */ update RDB$TRIGGERS set RDB$TRIGGER_INACTIVE=0 where RDB$TRIGGER_NAME in( select A.RDB$TRIGGER_NAME from RDB$TRIGGERS A left join RDB$CHECK_CONSTRAINTS B ON B.RDB$TRIGGER_NAME = A.RDB$TRIGGER_NAME where ((A.RDB$SYSTEM_FLAG = 0) or (A.RDB$SYSTEM_FLAG is null))…
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