firemonkey

问题 I have met an issue of unproper selection of items in TListBox in my application with a HorzScrollBox in the form. The form has two (or more) TListBox on it. They are placed away from each other so that their absolute left coordinates difference is more than the width of the current device screen width. The error appears in the following sequence of user actions. An item is selected from the left TListBox The HorzScrollBox is scrolled to the right and the second TListBox becomes visible to

问题 I have met an issue of unproper selection of items in TListBox in my application with a HorzScrollBox in the form. The form has two (or more) TListBox on it. They are placed away from each other so that their absolute left coordinates difference is more than the width of the current device screen width. The error appears in the following sequence of user actions. An item is selected from the left TListBox The HorzScrollBox is scrolled to the right and the second TListBox becomes visible to

问题 How can I use animated GIF in Firemonky. I can load the gif using Timage but it's not animating. I am using Delphi 10.2 tokyo. 回答1: Use TBitmapListAnimation. Place TImage on Form Place TBitmapListAnimation into TImage like on screenshot: Set properties in TBitmapListAnimation AnimationBitmap - You can use online convertorsm that split gif into frames. http://ezgif.com/split http://www.photojoiner.net/merge-photos/editor/# Set another properties: AnimationCount = 8, AnimationRowCount = 1,

问题 I am developing a cross-platform application (for Windows, Mac etc.) and for 32-bit and 64-bit machines. I have lots of XML files which I need to validate against their XSD . Is there any way of doing this in Delphi XE3? I have tried DTD validation but I'm always getting a "DTD prohibited" error. I have also tried solutions mentioned on lots of websites to resolve this error, but I've had no success. Thanks in advance. Below is the code I've used... function TForm2.ValidateXML(const xmlFile :

问题 I have a TComponent which controls some of the UI. This component is designed to support both VCL and Firemonkey by using conditionals. Such conditionals instruct my component whether to accept a VCL control or an FMX control. It's currently expected that this conditional is defined on the application level to instruct the component in run-time whether it's to manage a VCL or FMX control. I'd like to publish my component into the IDE with support for both VCL and FMX, sharing the same unit

问题 I have a TComponent which controls some of the UI. This component is designed to support both VCL and Firemonkey by using conditionals. Such conditionals instruct my component whether to accept a VCL control or an FMX control. It's currently expected that this conditional is defined on the application level to instruct the component in run-time whether it's to manage a VCL or FMX control. I'd like to publish my component into the IDE with support for both VCL and FMX, sharing the same unit

问题 I have some code that paints a set of controls laid on top of a TImage. I then grab the TImage's MakeScreenshot to save out the file. This now works perfectly. What I am now struggling with is changing the font properties of one or more labels / text style controls. No matter what I try, the label does not change. Below is my sample code :- procedure TfrmSnapshot.Process; var LRect1, LRect2, LRect3, LRect4: TRectF; X, Y, W, H: Integer; begin // X := Round(Label1.Position.X); Y := Round(Label1

问题 I have some simple C++ code which won't be compiled by the Clang based C++11 compiler bccaarm of C++ Builder 10.1 Berlin. This is the code: TComponent* Comp = new TComponent(this); std::vector<TComponent*> Comps; Comps.push_back(Comp); And this is the error: [bccaarm error] stl_iterator.h(963): rvalue reference to type 'value_type' (aka 'System: classes::TComponent * __strong') can not be bound to lvalue of type '__borland_class * isTObj __strong' (aka 'System::Classes::TComponent * __strong'

问题 I have created Android app using Delphi 10 Seattle. I have stored the image path and from there I need to open the image in the native Android Gallery. How can I implement this functionality? 回答1: The Java equivalent of what you're trying to do, looks like this (based on open-an-image-using-uri-in-androids-default-gallery-image-viwer) Intent intent = new Intent(); intent.setAction(Intent.ACTION_VIEW); intent.setDataAndType(Uri.parse("file://" + "/sdcard/test.jpg"), "image/*"); startActivity

问题 Looking at the new Delphi XE2 with Firemonkey. Considering that it compiles for Windows, Mac OSX and iOS, VCL components are useless in a FireMonkey application. My question is: Is there/will there be an Indy Firemonkey Edition? Cause I seriously need the IdHTTP.Post(); . If not, is there a way to do this in FireMonkey? I have been googling for quite awhile now, not finding anything. :S 回答1: VCL means Visual Component Library . There's nothing about Indy that is "visual" (meaning "seen at