percussion essays

percussion essays As I see it, the world is a stage, and everyone puts on a performance, although some are better than others. Every single human on the face of the Earth is an actor/actress in this great show, by pretending to be what we truly are not. Alone, at home, without anyone else around, we are our natural selves, but as soon as other people are added to the equation, the show changes, and suddenly we are completely different. There are situations in life where this is beneficial, and at different times it is not so helpful. For example, when a person goes to a job interview, in most instances, they are more likely to dress nicer than they do at home. This gives the interviewer the perception that this individual is a civilized, efficient, well-organized potential employee. However, if that person goes to the same interview in torn jeans and an unwashed, grungy shirt, they are perceived as lazy and a slob, even if they are truly brilliant. This is just one instance where it is beneficial to put on a front when around strangers. Another example may be when someone meets their future mother/father in-law for the first time. They dress up in nicer clothes than they normally would, and are more polite and well mannered. They fear that if these people see them in their natural state, they may disapprove of the marriage, thereby causing many problems down the road, for the happy couple. However, its not always beneficial for someone to act differently than they normally do. Fake fronts are often easy to see through and can be hard to keep up, if they are not well rehearsed. I was a pretty nerdy individual throughout my high school years, and when I joined the Marine Corps and transferred into an entirely different group of acquaintances, I tried to act differently. However, not being used to that sort of life, it was obvious that I did not fit in with certain groups of people and that I was causin ...

How to Create and Use DLLs in Delphi

How to Create and Use DLLs in Delphi A Dynamic Link Library (DLL) is a collection of routines (small programs) that that can be called by applications and other DLLs. Like units, they contain code or resources that can be shared between multiple applications. The concept of DLLs is the core of the Windows architectural design, and for the most part, Windows is simply a collection of DLLs. With Delphi, you can write and use your own DLLs and even call functions regardless of whether or not they were developed with other systems or developers, like Visual Basic, or C/C. Creating a Dynamic Link Library The following few lines will demonstrate how to create a simple DLL using Delphi. For the beginning start Delphi and navigate to File New DLL to build a new DLL template. Select the default text and replace it with this: library TestLibrary;uses SysUtils, Classes, Dialogs;procedure DllMessage; export;begin ShowMessage(Hello world from a Delphi DLL) ; end;exports DllMessage;beginend. If you look at the project file of any Delphi application, you’ll see that it starts with the reserved word program. By contrast, DLLs always start with library and then a uses clause for any units. In this example, the DllMessage procedure follows, which doesnt do anything but show a simple message. At the end of the source code is an exports statement which lists the routines that are actually exported from the DLL in a way that they can be called by another application. What this means is that you can have, say, five procedures in a DLL and only two of them (listed in the exports section) can be called from an external program (the remaining three are sub procedures). In order to use this DLL, we have to compile it by pressing CtrlF9. This should create a DLL called SimpleMessageDLL.DLL in your projects folder. Finally, lets take a look at how to call the DllMessage procedure from a statically loaded DLL. To import a procedure contained in a DLL, you can use the keyword external in the procedure declaration. For example, given the DllMessage procedure shown above, the declaration in the calling application would look like this: procedure DllMessage; external SimpleMessageDLL.dll The actual call to a procedure is nothing more than: DllMessage; The entire code for a Delphi form (name: Form1), with a TButton (named Button1) that calls the DLLMessage function, looks something like this: unit Unit1;interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls; type TForm1 class(TForm) Button1: TButton; procedure Button1Click(Sender: TObject) ;private{ Private declarations }public{ Public declarations }end;var Form1: TForm1; procedure DllMessage; external SimpleMessageDLL.dllimplementation {$R *.dfm} procedure TForm1.Button1Click(Sender: TObject) ;begin DllMessage; end;end.