VB COM programming tutorial
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VB-based COM programming Tutorials Many Visual Basic enthusiasts feel very mysterious about COM, and the tutorial of the Tools for Visual Basic is not yet, so I don't know how to start. In this topic, we will introduce you to how to construct a COM component in one step by step, then gradually expand it, and show you a mystery of COM component design. Due to the limited space, I have not introduced the principle of COM in this topic, and interested readers can find relevant information.
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COM entry
In the first part, I will introduce you to COM and classes with the fastest way. We will first strictly define what is COM with a comparative formal language, then explain the work mode of the class. Finally, we will explain what is attribute, sub-processes, functions, and events, and how they work. First Day COM Introduction The Establishment of the Second Class Establishment Section III Adds Properties Section IV Add more attributes Section 5 Subsystem, Functions and Parameters Section 6 Event
Go deep into COM
In the second part, we will use the top-sized knowledge to create a database-based real COM component, then use the self-built customer program to handle it so that we can clearly appreciate COM in programming. Simple, and finally discuss how to test this COM component! Section 1 Reusability 2 Create First COM Object Section 3 Add Properties and Methods Section IV Test Section 5 Establish a Test Program Section 6 Comprehensive Test
Expand COM
We will discuss how to solve the previously encountered compatibility issues, then familiar with other ActiveX components, and solve some small problems related to the instance, which will eventually reach a new step. Section 1 Compatibility Section 2 ActiveX Exes Section 3 Test ActiveX EXE Section 4 Example Section 5 Create Test Program Section 6 Release Components
