- Delphi xe10 critical section in threadterminated for free#
- Delphi xe10 critical section in threadterminated code#
- Delphi xe10 critical section in threadterminated windows#
The designer is displayed below:įor each style, the Style Designer has five sections: How can we modify an existing style or create a brand new one? Delphi includes a specific “Bitmap Style Designer” application (linked from the IDE Tools menu), which can also be freely distributed to external graphical designers.
Delphi xe10 critical section in threadterminated for free#
Notice that the product ships with many styles and a few more are generally sold, but can be downloaded for free as part of promotions. So we can change the user interface of the a pplication in many different ways, as visible in the next image, where I've picked two completely different styles, Ruby Graphite and Smokey Quartz. Procedure TStylesForm.ListBox1DblClick(Sender: TObject) The selection of the current style takes place using the SetStyle method, which takes a string with the style name as parameter, so we can apply it to the list box elements after a double-click: You can load new styles from external files using the LoadFromFile and LoadFromResource methods of the TStyleManager. Procedure TStylesForm.btnListStylesClick(Sender: TObject)
Delphi xe10 critical section in threadterminated code#
For example, you can get a list of styles using the StyleNames property, as in the following code fragment: You generally use class methods and properties, rather than creating an instance. To work on styles at run-time you use the TStyleManager class, defined in the Vcl.Themes unit. In general, if a control supports themes, it should also work or when styled. In general styles work with both TWinControl and TGraphicsControl descendants and any third party tool that supports theming, which is most of the recent or recently updated components. Notable exclusions the OS dialogs (there are some external tools to style them but they do have issues in Win64). Notice that most elements will be styled, but not all of them.
Delphi xe10 critical section in threadterminated windows#
Below you can see a trivial application at design time and the same application running with the “Auric” style selected in the dialog shown above:Īs you can see, the program hasn't got the standard Windows look and feel.
You can also select one of the styles to be the default one, activated as the program starts. In this page you can pick a few styles (either by Embarcadero or some you've added) to be embedded as resources in your applications.
By default, you pick the design-time style(s) in the Appearance page of the Project Options: You can embed a style inside an application using resources, or you can refer to an external file with the style information. Styles in a VCL application can be set (and changed) both at design time and at run time. Styles extend the concept of themes, in which the styling was provided at the operating system level. But what is a VCL Style? Here is a tentative definition:Ī style is a collection of painting rules you can dynamically apply to an entire Windows application, changing the size and appearance of various elements, the fonts, and the color scheme used by VCL controls for painting. I successfully integrated this lock less technique into my engine, but later added some condition variables to it to prevent burning up CPU cycles while threads are idle.Even if they have been in the product for a few versions, styles have seen several improvements (like the recent addition of menu styling in XE6). In order to achieve the most available clock cycles, locks simply aren’t acceptable in most cases.
In a video game system, running somewhere around 60 frames per second, your CPU has a window of 16.7ms to do all of its work from gathering input, updating the simulation, rendering a frame of animation, and handling audio output. I wrote this code because I’m working on a video game engine. In cases where you need near real-time performance, mutexes can therefore become a bottle-neck. The more threads there are trying to access the critical section, the more contested the mutex is, and more CPU cycles are required to lock/unlock the mutex. If mutexes (such as TCriticalSection) can be used to protect your data between threads, it is a far safer option. Lock-less threading is the most dangerous tool in your workshop, and should only really be attempted in cases where performance is critical. In most cases, critical sections should not be avoided.