| OZ++ Sample: DropReceiver | 
/****************************************************************************** * * Copyright (c) 2014 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer. * * 2. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * * DropReceiver.cpp * *****************************************************************************/ #include <oz++/motif/ApplicationView.h> #include <oz++/motif/Label.h> #include <oz++/motif/DropSite.h> #include <oz++/motif/DropTransfer.h> namespace OZ { class MainView :public ApplicationView { private: Atom COMPOUND_TEXT; SmartPtr<Label> label; SmartPtr<DropSite> dropSite; SmartPtr<DropTransfer> dropTransfer; void drop(Action& action) { XmDropProcCallback dropData = (XmDropProcCallback)action.getCallData(); if(dropData -> dropAction == XmDROP && dropData -> operation == XmDROP_COPY) { printf("DROP and DROP_COPY\n"); dropTransfer->start(dropData->dragContext); } else { printf("drop cancel\n"); dropTransfer->cancel(dropData->dragContext); } } void move(Transfer& transfer) { printf("move\n"); Atom* type = transfer.getType(); if(*type == COMPOUND_TEXT) { printf("type: COMPOUND_TEXT\n"); String value = (String)transfer.getValue(); XmString xms = XmCvtCTToXmString(value); label -> set(XmNlabelString, (XtArgVal)xms); } } public: MainView(Application& applet, const char* name, Args& args) :ApplicationView(applet, name, args) { Args ar; CompoundString cs("Drop Receiver"); ar.set(XmNlabelString, cs); label = new Label(this, "receiver", ar); COMPOUND_TEXT = XmInternAtom(getDisplay(), (char*)"COMPOUND_TEXT", False); Atom targets[1]; targets[0] = COMPOUND_TEXT; ar.reset(); ar.set(XmNimportTargets, (XtArgVal)targets); ar.set(XmNnumImportTargets, 1); ar.set(XmNdropSiteOperations, XmDROP_COPY); dropSite = new DropSite(label, &ar); dropSite -> registerDropProc(this, (Callback)&MainView::drop, NULL); XmDropTransferEntryRec entry[1]; entry[0].target = COMPOUND_TEXT; ar.reset(); ar.set(XmNdropTransfers, (XtArgVal)entry); ar.set(XmNnumDropTransfers, 1); dropTransfer = new DropTransfer(label, &ar); dropTransfer -> registerTransferProc(this, (Callback)&MainView::move, NULL); } ~MainView() { } }; } // int main(int argc, char** argv) { try { const char* appclass = argv[0]; Application applet(appclass, argc, argv); Args args; args.set(XmNgeometry, "300x100"); MainView view(applet, argv[0], args); view.realize(); applet.run(); } catch (Exception& ex) { caught(ex); } return 0; }