C++Builder Developer's Journal

I'm going to post an answer to my own question, and it appears it's actually pretty trivial. FMX has a property in Object Inspector called FilterChar that is built to handle this issue directly. Unfortunately it is almost not cross-referenced to the act of intercepting keystrokes. It was a serendipi...

Greatly appreciated. The #include <string> was missing. At that point, all seems well. I really do appreciate the input from this site. I try to utilize the help choices, plus our friend Google, but I tend to search differently than the way they think. It's often quite difficult to locate proper ref...

Quick follow-up: Thanks for the pointers - it did (sort of)work. Eventually realized that I also needed to finish it of by changing " Key = L'\0' " to "KeyChar = L'\0' ". One problem, this works fine on Windows. The same code, same compiler, same session, but with the target switched to Android - it...

Thanks for the info - great help. (By the way, Yes, I know Key = Key is redundant and not doing anything, but in this case it's helping me track where I am & what's going on. Does not affect the compiler, but it really works to help the human.) It's taking some getting used to, trying to decipher th...

This is the code block in question: do { ModNum = DivNum%8; StrOut = std::to_wstring(ModNum); // This line errors under Windows10 only Bufr[CountOct] =StrOut[0]; CountOct--; DivNum = DivNum/8; }while (DivNum>=8); it compiles and runs properly using FMX when the target OS is Android. The same code th...

Working on Multi-Platform programming using C++Builder 10.4 and the FMX package. UPDATE: Through quite a bit of reading I have discovered that soft-keyboards rarely create a KeyEvent (in fact, it appears to be discouraged). I need to build a series of filters for input to a TEdit box, intercepting t...

At this point I can get my program running accurately and in like fashion on both Windows and Android. Unfortunately, I have to change about 6 lines of code between the two formats. (Using C++Builder 10.4 - as an FMX based compilation). Unfortunately the best choices - std::to_wstring() (and std::to...

Thanks very much. Search as I may, I never did come across anything related to BCD conversion (other than working with bit-masks - which I have been doing). Great help!

I've been using wcstol for Dec & Hex, Oct, & Bin.

This hits my searches precisely. Again, thanks very much.

Thanks, great response. I did discover the differences between various forms of characters (16 vs 32 etc) , but as you say, the library is pretty light on support. The larger problem I've been dealing with is a relatively painless method of dealing with user input in other number bases. There's plen...

Revisiting this. The original code that I was using seems to be fine for VCL and Windows. I'm now trying to re-work with FMX for Android. The suggested code: __int64 i1 = wcstoll(Edit1->Text.c_str(), NULL, 2); (as well as the std:: version) still errors-out. The message is: wchar.h(146): candidate f...

Thanks for the input, and I understand your points. The real issue here is that the user is entering a binary number in text form: "1111 0101 0011". That does not normally convert to an actual integer the represents the binary number. So far, the only thing I've found is that one conversion call. It...

I'm working on a project and need to convert a Unicode string (in Edit1->Text item) that has input limited to "0" and "1", which represents a binary integer. This needs to be taken and converted to an integer (preferably Int_64, but that's not set in stone). Using: Edit1->GetTextBuf(Bin,Edit1->GetTe...

Thanks very much, I do appreciate the detailed response, it's quite helpful. Some additional comments, the code with the note "it's wrong" happens to come directly from the Embarcadero Help page examples. I really appreciated the note about it - gets a bit frustrating when the Examples and samples d...

Using C++Builder 10.4 (latest updates as of 5-Dec-2020) and attempting to use some sample code from RAD Studio Docwiki (specifically the C++ Version & not Delphi) [Environment & target: Windows 10, 32 bit target] I've run into a couple issues. The example code simply breaks. Issue 1: wcstombs, which...