By XE7 version of Delphi components are available to manage Bluetooth Classic and LE. With FireMonkey is quite simple also create a bluetooth server. Trying my applications on Raspberry PI3 where Federico mounted Marshmallow I am aware that if BT is not available on the device the app crashed. To overcome this problem I tried…
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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:
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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:
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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)) and (b.rdb$trigger_name is null) AND (NOT(A.RDB$TRIGGER_NAME LIKE 'RDB$%')) ); suspend; end |
Disabling all database trigger:
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create procedure SP_DISABLE_ALL_TRIGGER as begin update RDB$TRIGGERS set RDB$TRIGGER_INACTIVE=1 where RDB$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$SYSTEM_FLAG is null)) and (b.rdb$trigger_name is null) AND (NOT(A.RDB$TRIGGER_NAME LIKE 'RDB$%')) ); suspend; end |
Yesterday I found a simple application with Delphi source , here , that allows you to manage and search the applications installed on your Android device . To which I got the idea of trying to make a launcher for Android using a IMX6 card ( Cortex A8 ) to do the test. The thing…
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