imageviewer | 图片文字标注工具。直接运行releases里的可执行程序，使用说明是help.pdf | Document Editor library
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QUESTION
I have excel Project that includes pictures. I have userform that has ImageBox. This form shows pictures dynamically according to row number with using selection change event.
This event triggered when cell selection change. But i want to triggered this event by clicking on shape. Is there any solution for that?
These are codes for cell selection change event.
...ANSWER
Answered 2021-Jun-09 at 08:01As written in the comments, you can assign a (parameterless) Sub to a shape that is executed when a shape is clicked.
In Excel, you can assign the macro by right-clicking on the shape and select "Assign macro".
With VBA, you write the name of the macro to the OnAction-property of the shape:
QUESTION
Hi, I would like some help on this.
This loop comes from my products table, using pure laravel I load each product in inputs, so if I make any changes and click on an update button it is redirected to a route to update the changed product.
How could I do this same idea using livewire?
How to display the updated data in this loop without having to go to another route.
My blade:
...ANSWER
Answered 2021-Jun-01 at 17:11You can create a Livewire ProductComponent and in blade have the div card once this loop the same elements https://www.laravel-livewire.com/docs/2.x/making-components https://www.laravel-livewire.com/docs/2.x/rendering-components
QUESTION
I’ve been trying to build a simple svg editor to try out svelte. Its been going great until I built a select box for the element to drag along with the active selected element. While dragging that selected element the selection box lags behind the element itself. I’m not sure whats wrong.
I’ve tried a few things like using the store to pass location data and putting events on a parent element so everything calculates on the same component in case that might be the issue but still it doesn’t work. I’m not sure what I’m doing wrong. I’ve been trying to figure this out for a while but don’t have any idea what might be the issue.
You can check my codesandbox simplified demo of it here: codesandbox.io
...ANSWER
Answered 2021-May-17 at 03:45I think this is causing your issue:
In elementMoveMoveHandler you are updating the element's position here:
QUESTION
Please tell me how can I check the file for its real type?
When executing the imagecreatefrompng() function, it displays an error: is not a valid PNG file.
mime_content_type() says image/png file.
This file...
ANSWER
Answered 2021-Apr-23 at 06:46It seems that your png file is too big, and PHP is unable to allocate enough memory.
When you run:
QUESTION
I am writing a python program that gradually changes an image step by step, adjusting each pixel by a small amount in each step. To get a visualization of what the program is doing during runtime, I want it to display the image at each step, always overwriting the currently shown image so that it doesen't open bunch of display windows.
I already tried matplotlib, opencv and skimage, with their according possibilities to display an image and update the frame content in the course of the program:
...ANSWER
Answered 2021-Mar-27 at 18:51Well, I am still not sure what exactly your goal is but here is a code piece that modifies an image inside of a window whenever the upper button is pressed.
QUESTION
I'm coding a super basic canvas-based image viewer. I'm trying to implement image panning. I want to be able to hold my mouse button down and move the mouse to pan the image around. I'm using the mouse up and down events to enter and leave a "panning mode". My mouse move handler never seems to see that the panning boolean changes from false to true, though.
I've tried writing my functions as arrow functions instead, thinking maybe it was something to do with the fact that these are DOM handlers (issues with this or something), but that didn't seem to make any difference.
I have a heads-up display that shows the panning state and it updates accordingly, but my console logs within the mouse move handler always show the variable as false.
How can I get this panning boolean value to update as you'd expect within my mouse move handler?
Here is my trimmed down code, which is testable in my codepen link further down ...
...ANSWER
Answered 2021-Apr-22 at 00:23you have at least two solutions here:
Solution 1:
declare listener on canvas:
QUESTION
I am doing an Image Viewer that allow user to browse their folder and show the first image in the folder. By scrolling the mouse wheel, user is able to zoom in and out the image. However, the image pan up and down too as the scroll feature of the mouse wheel is still there. I try scrollbaralwaysoff but it doestn work too. May I know how to disable the scroll feature while remaining my zooming feature?
...ANSWER
Answered 2021-Apr-18 at 15:56When dealing with UI elements, it's important to remember that Qt relays events to the "current" widget (the currently focused element for keyboard events, or the topmost enabled widget under the mouse), then that widget will decide if that event can be handled or not, and in the latter case the event is then propagated to its parent, continuing to climb the object tree until a widget actually can handle that event. Please note that, in this context, handling an event doesn't mean that the widget actually reacts to it in some way: for various reasons, a widget could just accept the event and still do nothing with it (consider a disabled button).
The problem is that you're implementing the wheel event for the main window only, and this means two things:
- the event will be possibly received even when scrolling on unrelated context; for instance, if you scroll on a QLineEdit, you will trigger the zooming, which could be very confusing to the users;
- the zooming is only triggered as soon as the graphics view propagate it: if scroll bars are visible, they will "eat" (accept) the event until they reach their boundaries, and only at that point the event will be propagated to the main window and finally trigger the zooming;
The solution is to track the wheel event on the proper widget, the view; there are two possible solutions: subclassing and event filtering.
SubclassingThis is the common OOP approach, which provides better modularity and allows tidier reimplementations.
QUESTION
I’m brand new (4 days old!) at Mendix, and I’m trying to write a very basic expense application where expenses are entered, a receipt image (JPG) is uploaded for the expense, and they are then sent for approval/rejection via another data grid page. The Domain Model looks like this. Domain Model
The problem is, I’m trying to use an image viewer to view the expense’s associated image but no image appears. I’ve created a Microflow to get the image and display it in an ImageViewer. The Microflow looks like this: MicroFlow
(The middle box is just a message used for debug purposes) The properties for Retrieving the ExpenseReceiptsUpload row is as follows: Get Row Properties
When the user clicks the ‘View Receipt’ button, the view image panel appears, but no image is shown. Below are the properties for the ‘View Receipt’ button: View Receipt Button Properties Note that I am calling the correct GetImageMicroflow microflow.
The layout for the Image Viewer Object is as follows: Image Viewer Object
Why are the images not appearing? I assume it has something to do with the association between my Expenses entity and my ExpensesReceiptsUpload entity but I feel like I’ve tried everything I can think of but I cannot get it to work! Any words of wisdom would be greatly appreciated!!!
...ANSWER
Answered 2021-Apr-16 at 19:24The association needs to be set during the save (commit) action or during the create action. So when you have the Microflow Action Create ExpensesReceiptsUpload you need to set the association to the Expenses object, when the object is committed this will be saved.
Add this by opening the create action or commit action and click add, select the association, and fill in the value (such as $Expenses).
Since the association is 1-1 you are also allowed to set relation from the Expenses object. But since you probable create Expenses first, and then ExpensesReceiptsUpload, it makes sense to set the value for the association from the Create/Commit action for ExpensesReceiptsUpload, because then the value $Expenses will be available.
Edit: i noticed you placed a debugger with the expenses ID, does this show an ID, if you change this to output the ExpensesReceiptsUpload id (or any other attribute of that object), you will notice if the object is available or not).
QUESTION
My iOS app has a list of image thumbnails, on every click of thumbnail we are calling API to get the authenticated URL(eUnity Imageviewer URL) and url have 15 minutes session after that it will expire.
My question is when I am trying to load the url in WKWebView, first time it is opening properly when application is newly installed but once we opened that URL on WKWebView and we (killed/terminate/put in background) the app and when we come back to application it is giving error session expired for every thumbnail but same url is working fine in SFSafariViewController or external safari. is WKWebView storing something??
I checked after clearing the [WKWebsiteDataStore allWebsiteDataTypes], NSCachedURLResponse and Allow Arbitrary Loads is also YES.
ANSWER
Answered 2021-Feb-19 at 10:57Do you absolutely need the WKWebView caching?
Frankly, for the most part we have had issues with using cache as the data that had to be flushed were persisted anyway leading to various bugs. Therefore we decided to ignore all cached data all together and it solved the caching bugs we have encountered.
When initializing the NSURLRequest, try to pass NSURLRequestReloadIgnoringCacheData as the cachePolicy parameter.
Alternatively you can try executing the code below, but beware, it removes cached responses from all the NSURLRequests from within the app.
[[NSURLCache sharedURLCache] removeAllCachedResponses];
In the NSURLCache documentation you can check out alternatives to removing cached objects which might better suit your needs.
Good luck!
QUESTION
I am attempting to create a very simple image viewer in tkinter with two simple buttons view and close. I have the close button functioning as intended but I am unable to get my view button to open the specified image in my file directory. I have tried importing ImageTK to write a button command to open it but have so far been unsuccessful.
ANSWER
Answered 2021-Feb-13 at 02:06There are a number of errors in your code and previously I closed it after picking one of them and marking it as a duplicate of another question that had been asked and answered before that covered that problem.
However, based on comments you made and after thinking it over, I decided to reopen it and attempt to address all or at least most of the issues I saw — otherwise it would likely have taken you quite a while to get everything fixed.
Here's the result:
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