![]() ![]() Or prohibited to save by different requirements. The PDF file can be read-only, full edited, To load pdf files from the hard drive or serverĪnd open in an area on the form. Then disable the print, save and copy functions.Īt form load event the developers can use the LoadFile method With PDF viewer component, it's easy for the vb developers to embed an existing pdf files in a form Since the functions are exported, it all functions as if it was using an external dll, just that no separate file is required for distribution.PDF viewer component is an easy and reliable solution for the developers to embed pdf documents in a vb application. If its running as a compiled code, then it uses a second set of API declares that reference the compiled executable itself. If it is, then it uses the external API declares. The trick is, that you wrap your raw API access routines, in another function which tests to see if the code is running in the IDE or not. Then when your ready to compile, you use the exact same C object file that made the dll, and just link it into the exe build process. This lets you debug everything traditionally. When you write your C code, you compile it as a standard dll and use the Declares to access the library. So how do you debug it while running code in the IDE you ask? There isnt much point in doing this trick, if you cant debug the other parts of your code in the IDE. Now to use the functions from VB6, you just access them normally as if it was a dll using the Windows API Declare syntax. It also turns out that if your C code defined the functions as exports, the linker will automatically place them in the export table which works for exe or dll the same. ![]() This turns out to actually be quite easy, all you have to do is add the compiled. So first up, how can we include code compiled in C into our VB6 binary. VB6 has the native 8 byte currency type which can house a 64bit number, but it cant manipulate them. There could also be performance reasons with say a compression routine or similar.Īnyway, the example I went with, was creating 64 bit numbers and showing them as a string. Or rather do some small operations that C makes easy, but are a mess in VB6. Maybe you have a decoder written in C, that you dont want to have to port. This need doesnt come up that often, but it does come up. I really wanted a way to link in compiled code written in C, directly into my VB6 projects. Once I got playing with the tool to modify the link process, I thought I would keep going a bit and see what else I could do. In the last post I covered some tools which allow you to create standard dlls in VB6. Coders Corner - Link C Obj Files into VB6 Link C Obj Files into VB6 ![]()
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