Qt Toolkit - mainlyMotif/editor.cpp example file

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# Editor Example

This example shows two simple text editors, with most of the program written in Motif. One editor is a Qt QMultiLineEdit, the other is a Motif text widget. They are bound together in a Motif form widget.

    #include "qxt.h"
    #include <qmultilinedit.h>
    #include <qpainter.h>
    #include <qmessagebox.h>
    #include <X11/Shell.h>
    #include <X11/StringDefs.h>
    #include <Xm/Form.h>
    #include <Xm/Text.h>

    static const char* QTEDMSG =
        "This is a Qt widget.\nIt is a QMultiLineEdit.";

    static const char* XTEDMSG =
        "This is an Xt widget.\nIt is an xmTextWidgetClass.";

    class EncapsulatedQtWidget : public QXtWidget {
        QMultiLineEdit* mle;
    public:
        EncapsulatedQtWidget(Widget parent) :
            QXtWidget("editor", parent, TRUE)
        {
            mle = new QMultiLineEdit(this);
            mle->setText(QTEDMSG);
        }

        void resizeEvent(QResizeEvent*)
        {
            mle->resize(width(),height());
        }
    };

    main(int argc, char** argv)
    {
        XtAppContext app;

        Widget toplevel = XtAppInitialize(
            &app, "Editors",
            0, 0, &argc, argv, 0, 0, 0);
        QXtApplication qapp(XtDisplay(toplevel));

        Widget form = XtVaCreateManagedWidget("form",
                        xmFormWidgetClass, toplevel, 0);

        EncapsulatedQtWidget qtchild(form);

        const int marg=10;

        Arg args[20];
        Cardinal nargs=0;
        XtSetArg(args[nargs], XmNwidth, 200);                      nargs++;
        XtSetArg(args[nargs], XmNheight, 200);                     nargs++;
        XtSetArg(args[nargs], XmNleftOffset, marg);                nargs++;
        XtSetArg(args[nargs], XmNtopOffset, marg);                 nargs++;
        XtSetArg(args[nargs], XmNbottomOffset, marg);              nargs++;
        XtSetArg(args[nargs], XmNtopAttachment, XmATTACH_FORM);    nargs++;
        XtSetArg(args[nargs], XmNbottomAttachment, XmATTACH_FORM); nargs++;
        XtSetArg(args[nargs], XmNleftAttachment, XmATTACH_FORM);   nargs++;
        XtSetValues(qtchild.xtWidget(), args, nargs);

        nargs=0;
        XtSetArg(args[nargs], XmNeditMode, XmMULTI_LINE_EDIT);     nargs++;
        XtSetArg(args[nargs], XmNvalue, XTEDMSG);                  nargs++;
        XtSetArg(args[nargs], XmNwidth, 200);                      nargs++;
        XtSetArg(args[nargs], XmNheight, 200);                     nargs++;
        XtSetArg(args[nargs], XmNtopOffset, marg);                 nargs++;
        XtSetArg(args[nargs], XmNbottomOffset, marg);              nargs++;
        XtSetArg(args[nargs], XmNrightOffset, marg);               nargs++;
        XtSetArg(args[nargs], XmNtopAttachment, XmATTACH_FORM);    nargs++;
        XtSetArg(args[nargs], XmNbottomAttachment, XmATTACH_FORM); nargs++;
        XtSetArg(args[nargs], XmNrightAttachment, XmATTACH_FORM);  nargs++;
        XtSetArg(args[nargs], XmNleftAttachment, XmATTACH_WIDGET); nargs++;
        XtSetArg(args[nargs], XmNleftWidget, qtchild.xtWidget());  nargs++;
        Widget xtchild = XtCreateManagedWidget("editor", xmTextWidgetClass,
            form, args, nargs);

        XtRealizeWidget(toplevel);
        XtAppMainLoop(app);
    }