Chris Boss This series of articles is about getting started in using the PowerBasic Windows native code compiler. It is a tutorial about what the compiler is for and how it is used to write desktop applications, as well as standard Windows DLLs usable by other languages like C. A little history. For programmers who have been around for awhile, they may be familiar with the name Turbo Basic. That is where tools like Turbo C and Turbo Pascal ended up. Turbo Basic though had a different path.
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GUI builders Why use dialogs instead of windows? A number of common messages are processed differently by this function. This extra processing basically benefits a Dialog with standard controls in areas such as the keyboard ie.
Such things as MDI are not well suited to use with Dialogs. There is a significant difference between the two functions! Since, DDT uses the Windows Dialog engine, one advantage it has is the a number of common tasks are already handled by the Windows dialog engine ie. When using SDK style windows you need to write your own code to process some messages, that the Windows Dialog engine handles already.
If your Dialogs need to do some custom stuff ie. Most Dialogs can be created with DDT and development is faster and easier. There are instances where SDK style Dialogs are a must though and a programmer should learn how to do both. Also the Windows Dialog engine which includes DDT uses a portion of the available 40 bytes 30 bytes are used for the extra window bytes , which means you have less of these bytes available for custom storage for the windows extra bytes.
If you need more bytes for the extra window bytes, then you will have to do extra work with DDT, since you will have to create your own Global UDTs to store data. There are situations where the extra data space available for SDK windows is very useful. Lastly, the Windows Dialog engine adds an extra amount of overhead when processing messages, since it has both a Window Procedure the Dialog Class handles this and a Dialog Procedure.
If your Dialog requires the optimum speed we are talking about extremely fast , then SDK style windows will save a few CPU cycles because it has less overhead. To be practical though, the extra overhead when using the Windows Dialog engine or DDT is negligable.
It is there, but it is so small that in most instances it is insignificant! Yet, there are some instances that SDK style coding is better. The beauty of PB, is that you have the option to use either method if you choose. On the other hand, Dialog Units DDT prevent you from having exact positioning of controls to an exact pixel.
For example, try a column of ten buttons evenly spaced. The odds are you will have a tough time getting them to have the exact same number of pixels between them.
You might find it interesting, that when I had to make a choice of whether to use the Windows Dialog engine or CreateWindowEX in my third party tools to create the Dialogs, I chose the Windows Dialog engine! This advantage also exists in DDT!
My recommendation is that a programmer learn both ways of writing Windows apps. For beginners, DDT is much easier so they should start there. At some point it is good to learn how to write apps using the SDK style and to experiment and see the differences. If you find that SDK style code offers some advantages crucial to your needs, then by all means use it!
From Eric Pearson : To clarify I create a dialog in a resource file and link it to my program. The program then uses SDK-style techniques to display and control the dialogs. And as a result, almost everything is done in dialog units, not pixels. I do find myself writing more and more new programs using DDT code, however. My personal summary of "DDT vs. SDK means "using the native API", and that implies that everything is possible if you are willing to write enough code, and to wrestle with the complexities of the API.
DDT is much easier to use. It requires much less coding and knowledge of the Windows APIs, and it can do nearly everything.
EZGUI 3. Create the dialog with any editor Microsoft Developer Studio, etc. EXE applet to turn into a binary. EXE applet to convert the.
RES file into a. EXE to embed an. RES file into the. RES Binary. DE actually works off the. RES file, so any change that you made manually in the. DLG are lost the next time you launch DE and make changes there Make a copy of those two files, rename the.
DLG file with a.
Get started with Power BI Desktop
This tour shows you how Power BI Desktop works, what it can do, and how to build robust data models and amazing reports to amplify your business intelligence. For a quick overview of how Power BI Desktop works and how to use it, you can scan the screens in this guide in just a few minutes. For a more thorough understanding, you can read through each section, perform the steps, and create your own Power BI Desktop file to post on the Power BI service and share with others. Shape the data with queries that build insightful, compelling data models. Use the data models to create visualizations and reports. Share your report files for others to leverage, build upon, and share.