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<mailto: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<mailto: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<mailto: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
