I don't know what my problem is, but I cannot set the font color in DEx2 for controls like TCheckBox, TRadioButton, TGroubBox, and TRadioGroup. It doesn't matter if I do it in the IDE or programmat...

Our company upgraded to Delphi 12 a few months ago. Today I discovered that my image viewer's context menu, which used to look like in the left image below, now appears with a single menu item blan...

What is the best way to make a Delphi application (Delphi 2007 for Win32) go completely full screen, removing the application border and covering the Windows Taskbar? I am looking for something sim...

I have seen that most of the components (VCLs) in Delphi are split in two parts. 1) DesignTime Package 2) RunTime Package Why all this fuss. What difference does it make if both RunTime and Design...

The text in a TEdit (or TCombo, TButtonedEdit) is always aligned to top. I have not found any property to change the alignment. Usually it is not a problem, unless I want to set a larger height. ...

Consider the following code: type TColors = (Red, Blue, Green, Yellow, Orange); // base type TMyColors = Green..Orange; // subrange type TAllowedColors = set of TMyColors; // set based on the su...

I can go the long way round, loop over each row, get a TRect from CellRect(col, row), then query its State for gdSelected ... But isn't there a quicker way to get the row number of the currently s...

I have a Delphi VCL application which I'm using to show some pictures and I would like to know if there is any possibility to transform it into a browser plugin (like firefox, google chrome etc ) i...

In my Delphi VCL Form Application, I have to change the background color of a TButton. Is there a way to apply this change without using third-party components? Thanks.

I've just upgraded to Delphi 11 Alexandria from Delphi 10.4.2. I use RDP a lot so I noticed flicker when a TPaintBox is invalidated. The weird thing is that it doesn't flicker if the form with the ...

I have a master TClientDataSet, which is also a detail dataset. This dataset is named MasterDetail1. Another dataset, DetailSet1, is a detailset of the MasterDetail1. The query for DetailSet1 is SE...

It's always been strange that there's never been a Description property on the TService in Delphi's VCL. Even to this day, Delphi XE2 doesn't have it yet. It's such a simple and common thing, that ...

I have this problem. When I hide my main form, then the taskbar icon of my application is also hidden. I saw a new question about this problem as well and the answers didn't really help. They sugge...

I want to do a basic procedure that draws something (let's say a triangle, for simplicity) on any control's (button, panel, etc) canvas: procedure DrawTriangle(Control: TCustomControl); In this fu...

There seems to be align property that works really well, but is is possible to align element so all elements on panel would be aligned to center all on bottom of each other if they all have less th...

I noticed that in a (Delphi 10.3.3 32-bit VCL app on Windows 10 64-bit) application that the caption of a label would not display if the string was "really" long. Further testing indicate...

I am working at a huge, legacy source code where several SetFocus is called at many places, but sometimes, the check if the control is visible or enabled is missing. Due to limited time, and the hu...

I have created a delphi component which descends from TGraphicControl. Is it possible to add support for mouse wheels? --- Edit --- I've exposed the MouseWheel events as shown below but they aren...

I built a wrapper around the TWebBrowser in Delphi. The wrapper aims at implementing multiple web browsers (edge chromium, chrome etc) into a single wrapper that auto detects which browser to use. ...

A Form in XE8 gets automatically the uses System.ImageList added. Like on the embarcadero site is said: System.ImageList contains the common for both FireMonkey and VCL code implementing the mos...

I only kept main form in auto-create forms and removed the rest. Basically I call those forms with TMyForm.Create(Self).Show; But when my works are done with this form, how can I release the re...

Delphi implementation of the TFlowPanel control seems to lack an important feature of the C# version, the AutoScroll one. The C# control with AutoWrap= False and AutoScroll=True behave like a hor...

I'm building a delphi application which does scientific simulation. It's growing in complexity & now consists of many units and forms. I'm starting to get EOutOFMemory Errors each time I run....

I am using Delphi XE6 and using Datasnap and JSON in my project. There is a bug I want to correct in the VCL unit System.JSON.pas (in the TJSONString.ToString function) where it should be escaping ...

I need develop a circular progress bar in delphi 2007, I can't use third-party components (company policy). I'm using a Canvas, drawing an arc, that's works fine, but the image is at a very low re...