python (12.9k questions)

javascript (9.2k questions)

reactjs (4.7k questions)

java (4.2k questions)

java (4.2k questions)

c# (3.5k questions)

c# (3.5k questions)

html (3.3k questions)

Questions - delphi-10.3-rio

Why PPI reported by Delphi is different from the calculated one?

I use Delphi 10.3 Rio, and need to know the screen PixelsPerInch ratio to scale my application accordingly. Calculating with the formula, my screen has 142 ppi. (Real values are: 15.5" diagonal a...
test-img

Marus Gradinaru

delphi

screen

delphi-10.3-rio

ppi

Votes: 0

Answers: 1

Latest Answer

Operating system PPI There is no bug and Delphi returns proper value in PixelsPerInch. PPI OS will return for the purpose of scaling your application is not the actual PPI value of the actual display ...
test-img

Dalija Prasnikar

Loading resources at design time?

Is it possible to load a resource at design time? I am making a speed button component, and I want to automatically load a new image from the resource whenever the button size changes. It already work...
test-img

Marus Gradinaru

resources

vcl

delphi-10.3-rio

Votes: 0

Answers: 1

Latest Answer

You can not load icons at design-time from your application resource, since at that time the application executable doesn't even exist as you haven't compiled it yet. Now, what you might be able to do...
test-img

SilverWarior

Auto-arrange child controls of a TToolWindow control

I want to build a custom toolbar. I created a new class from TToolWindow - this will be the base, on which the other controls will be placed (mostly speed buttons). I also have the algorithm for arran...
test-img

Marus Gradinaru

delphi

controls

toolbar

delphi-10.3-rio

Votes: 0

Answers: 1

Latest Answer

I can't believe how simple it was ! I just had to override the AlignControls method, and my controls are arranged whenever needed. procedure AlignControls(AControl: TControl; var Rect: TRect); overrid...
test-img

Marus Gradinaru

Run a console app and close the window only if it succeeds

I want to execute a console application from my GUI application and close the console window only if it is completed successfully. I tried this code, but when I call that function, a console window ap...
test-img

Marus Gradinaru

delphi

console

exit-code

createprocess

delphi-10.3-rio

Votes: 0

Answers: 1

Latest Answer

I found a solution: Cmd1:= '@echo off'; Cmd2:= '...'; // your console app and its parameters here Cmd3:= 'if errorlevel 1 pause'; ShellExecute(0, 'open', 'cmd', PChar('/c "'+Cmd1+'&'+Cmd2+'&a...
test-img

Marus Gradinaru

Posts

Questions

Blogs

Jobs