Further information can be found in Delphi's Windows API help file. When implementing IDropTarget we may need to examine the data object, the permitted drop effects and the modifier keys to answer the following questions: Can we accept the object? How should we handle the object if dropped?
This source code is merely a proof of concept and is intended only to illustrate this article. It is not designed for use in its current form in finished applications. The code is provided on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. The demo is open ...
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Replaces all "%" delimited environment variables in a string with their values. CreateEnvBlockCreates a new environment block suitable for passing to a child process. And so to the code: GetEnvVarValue This routine returns the value of a given environment variable (or returns the empty string...
This will require Delphi 2009 or later. Stage 1: Basic Implementation This first stage won't worry about Unicode support other than that needed to make the code compile and work with Delphi 2009 and later. Here is an outline of a class that, once implemented, meets our basic requirements:...
The MainForm of a Delphi application is a form (window) that is the first one created in the main body of the application. If you need to implement some kind of authorization for your Delphi application, you might want to display a login/password dialog before the main form is created ...
I built a Windows Service with Visual C++ to run in Windows Vista. If I modify it to run it as administrator (by using the command prompt) the code works. If I run it as a service it fails, so I think it's due to permmissions. But How can I run a Windows Service as ...
To create a description of a particular object of Delphi-application (including application forms) you can also use the«Screen Capture»button. Picture 6. «Screen capture» window In the dialog box click the icon«Accessible-object»or«Win32-screen», and then go to the Delp...
However, while the Delphi version is implemented via extension to the language, the C++ version is implemented via a template with a non-type parameter as codepage, as in: template AnsiStringT<unsigned short codePage> Therefore, the type previously known as AnsiString type is now ...
develop and deploy an ActiveX control in native code(VB, C++, Delphi, …), however there’s few documents describe the manual in .NET. With this manual, you will learn how to develop, sign and deploy an ActiveX control with C#.NET. The practice can also be applied to C++.NET or V...