Re: No colourisation with Qt

If you haven't found your answer yet, you may wish to look at Example 5 for 
CsScintilla.
https://sourceforge.net/p/csscintilla/csscintilla/ci/default/tree/copperspice_examples/Example5/src/

Yes, it is using CopperSpice and a CopperSpice port of Scintilla, but there 
aren't a lot of "Hello World!" type examples for Scintilla anymore. The 
SCiTE text editor was that, but now it is the test bed for everything so a 
bit difficult to find the tree for the forest. 

On Thursday, June 6, 2024 at 5:43:19 PM UTC-5 [email protected] wrote:

> I am setting CPP lexer to Scintilla but there is no colourisation. Tried 
> in Windows and Ubuntu. Result is the same. What am I doing wrong?
>
> Code reports that lexer is set. Tried setting text after setting lexer - 
> not working too.
>
> MainWindow::MainWindow(QWidget *parent)
>     : QMainWindow(parent)
>     , ui(new Ui::MainWindow)
> {
>     ui->setupUi(this);
>
>     scintilla = new ScintillaEdit(this);
>
>     scintilla->setText("#include \"mainwindow.h\"\r\n\
> \r\n\
> #include <QApplication>\r\n\
> \r\n\
> int main(int argc, char *argv[])\r\n\
> {\r\n\
>     QApplication a(argc, argv);\r\n\
>     MainWindow w;\r\n\
>     w.show();\r\n\
>     return a.exec();\r\n\
> }\r\n\
> \r\n\
> ");
> #if _WIN32
>     typedef void *(__stdcall *CreateLexerFn)(const char *name);
>     typedef int (__stdcall *GetLexerCountFn)();
>     typedef void (__stdcall *GetLexerNameFn)(unsigned int index, char 
> *name, int buflength);
> #else
>     typedef void *(*CreateLexerFn)(const char *name);
>     typedef int (*GetLexerCountFn)();
>     typedef void (*GetLexerNameFn)(unsigned int index, char *name, int 
> buflength);
> #endif
>     QFunctionPointer fn = QLibrary::resolve("lexilla", "GetLexerCount");
>     int lexCount = ((GetLexerCountFn)fn)();
>     qDebug() << "Lexer count =" << lexCount;
>     if (lexCount > 0) {
>         fn = QLibrary::resolve("lexilla", "GetLexerName");
>         for (int i = 0; i < lexCount; i++) {
>             char name[100] = "";
>             ((GetLexerNameFn)fn)(i, name, sizeof(name));
>             qDebug() << name;
>         }
>
>         fn = QLibrary::resolve("lexilla", "CreateLexer");
>         void *lexCpp = ((CreateLexerFn)fn)("cpp");
>         if (lexCpp != NULL) {
>             qDebug() << "cpp lexer created.";
>             sptr_t old_lexer = scintilla->lexer();
>             scintilla->setILexer((sptr_t)(void *)lexCpp);
>
>             sptr_t new_lexer = scintilla->lexer();
>             if (new_lexer == old_lexer) {
>                 qDebug() << "Lexer is not set!";
>             }
>             else {
>                 qDebug() << scintilla->lexerLanguage() << "lexer set!";
>             }
>         }
>         else {
>             qDebug() << "Lexer is NULL!";
>         }
>     }
>
>     setCentralWidget(scintilla);
>
>     scintilla->colourise(0, -1);
> }
>

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