Dear Ed, There is an example attached to this bug report: https://bugreports.qt.io/browse/QTBUG-42705
The attached to the bug example code is about mixing Qt C++ and Obj-C code and sharing text. May be it could be helpful. Take care. Regards, Robert On Fri, May 15, 2015 at 3:26 PM, Edward Sutton <edward.sut...@subsite.com> wrote: > Hi Ben, > > Thank you very much for sharing your example. > > https://github.com/benlau/quickios/blob/master/qisystemutils.mm > > Understanding the Objective-C language has been much more difficult than > I expected coming from C, C++, and C#. > > QMessageBox looks horrible on iOS. I am very glad you have a solution > for using UIAlertView in your alertViewCreate method. > > UiActionSheet and UIImagePickerController > > This has given me much to study and understand. > > Thank you again for sharing your iOS code! > > -Ed > > > > On May 15, 2015, at 2:33 AM, Ben Lau <xben...@gmail.com> wrote: > > Hi Edward, > > You may find example code from my project. > > quickios/qisystemutils.mm at master · benlau/quickios > <https://github.com/benlau/quickios/blob/master/qisystemutils.mm> > > It has implemented an interface to create and communicate to UIAlertView > , UIActionSheet , UIImagePickerController etc. It uses a singleton object > called SystemMessenger as the bridge between C++ and Objective-C++ code. So > that the developed code can be run on non-iOS platform too (for > development use) > > > On 15 May 2015 at 05:53, Edward Sutton <edward.sut...@subsite.com> wrote: > >> Can anyone share an example on how to implement the asynchronous return >> of a result from an Objective-C callback block to Qt? >> >> For example, see the “successBlock:” below which gets called back >> asynchronously. >> >> self.PDFCreator = [NDHTMLtoPDF createPDFWithHTML:(NSString*)html >> baseURL:(NSURL*)baseUrl >> >> pathForPDF:[@"~/Documents/hello-world.pdf" stringByExpandingTildeInPath] >> pageSize:kPaperSizeA4 >> margins:UIEdgeInsetsMake(10, 5, 10, 5) >> successBlock:^(NDHTMLtoPDF *htmlToPDF) { >> >> NSString *result = [NSString stringWithFormat:@"HTMLtoPDF did >> succeed (%@ / %@)", htmlToPDF, htmlToPDF.PDFpath]; >> NSLog(@"%@",result); >> self.resultLabel.text = result; >> >> } >> errorBlock:^(NDHTMLtoPDF *htmlToPDF) { >> NSString *result = [NSString stringWithFormat:@"HTMLtoPDF did >> fail (%@)", htmlToPDF]; >> NSLog(@"%@",result); >> self.resultLabel.text = result; >> }]; >> >> >> Background: >> ———————— >> >> I need to implement native iOS code to replace the missing QPrinter >> functionality I used to convert HTML to a PDF report on Android, OS X, >> Linux, and Windows. >> >> Unfortunately the Qt html-to-pdf functionality is implemented in >> QPrinter. This functionality is gone from Qt iOS since iOS has no printer >> device support, even though I am not accessing a printer device from iOS. >> >> I found this project which seems to work: >> >> https://github.com/iclems/iOS-htmltopdf >> >> Objective-C interfacing to C++ is challenging. >> >> Thanks in advance for any tips, >> >> -Ed >> This email and any files transmitted with it from The Charles Machine >> Works, Inc. are confidential and intended solely for the use of the >> individual or entity to which they are addressed. If you have received this >> email in error please notify the sender. Our company accepts no liability >> for the contents of this email, or for the consequences of any actions >> taken on the basis of the information provided, unless that information is >> subsequently confirmed in writing. Please note that any views or opinions >> presented in this email are solely those of the author and do not >> necessarily represent those of the company. Finally, the recipient should >> check this email and any attachments for the presence of viruses. The >> company accepts no liability for any damage caused by any virus transmitted >> by this email. >> _______________________________________________ >> Interest mailing list >> Interest@qt-project.org >> http://lists.qt-project.org/mailman/listinfo/interest >> > > > This email and any files transmitted with it from The Charles Machine > Works, Inc. are confidential and intended solely for the use of the > individual or entity to which they are addressed. If you have received this > email in error please notify the sender. Our company accepts no liability > for the contents of this email, or for the consequences of any actions > taken on the basis of the information provided, unless that information is > subsequently confirmed in writing. Please note that any views or opinions > presented in this email are solely those of the author and do not > necessarily represent those of the company. Finally, the recipient should > check this email and any attachments for the presence of viruses. The > company accepts no liability for any damage caused by any virus transmitted > by this email. > > _______________________________________________ > Interest mailing list > Interest@qt-project.org > http://lists.qt-project.org/mailman/listinfo/interest > >
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