I'm creating a bunch of flowcharts for data mapping through this database I'm working with, however it's getting quite messy and I was looking for a solution. Right now I have a ton of lines connecting all the variables together, but I was wondering if there is a way to add mouse over events to a text object or something so that when you hover over it, it display a connecting arrow to whatever it is related to; and removing your mouse from the object would make the connector disappear.
Does visio have any sort of support for this type of action in macros or in the ShapeSheet?
I don't know of any mouseover event in Visio, but there is a mouse move event. So every time the mouse moves you find out if the mouse is over one of your shapes, and if so then draw your arrow, if not, delete any existing arrow(s).
Finding the shapes under the mouse, quickly, may be a challenge. I don't know of any Visio routine to get the shapes that occupy an x, y point. You can draw a circle and use the SpatialNeighbors routine to find other shapes at that point.
Related
I am making an application in VB.NET and would like to know if there is a way to get a pointer to the object the mouse is hovering over when the mouse click is released, essentially a drag-drop operation, however, I would much rather not have to use coordinates, since it would make my program very inefficient.
I'm using XAML Toolkit ImageButton control to be able to create normal and pressed states for a button. Code is:
<toolkit:ImageButton NormalStateImageSource="ms-appx:///Assets/1_off.png"
PressedStateImageSource="ms-appx:///Assets/1_on.png"
Width="500"
Height="200">
</toolkit:ImageButton>
Issue I'm facing is, say I have a shape which isn't rectangle or square. For example I have PNGs for star and arrow object. Is there a way to set their boundary corresponding to shape? If not, please advice the best approach to handle such scenarios.
There are two options I tried
When clicking using mouse or touch - you'd check the last position of the pointer before click and see if the image in your button has a non-transparent pixel at that position.
Pros:
It's simpler than option 2.
You get most precise information
Cons:
You can't tell if a button got clicked with mouse, touch, pen, keyboard or by narrator using automation, so you could end up filtering out keyboard clicks just because the mouse cursor is a bit off. You could possibly use some heuristics like how long ago was the pointer move or pointer down event before the click event, but it's a bit hacky and might be unreliable.
Generate a vector path for your image and put it in the button template as a Path element with Fill="Transparent", then mark any other non-transparent or hit testable template elements (buttons, borders with Background="Transparent", etc.) as IsHitTestVisible="false".
Pros:
Doesn't break any input methods
Can be quite precise
For some shapes like a circle - the Path.Data could be quite simple or you could even use something like an Ellipse element instead
Cons:
You need to generate the path somehow
A complex path might adversely affect performance
A better solution overall in most cases is to leave the hit-testable area rectangular. The reason is - an arbitrary shape is a finicky and unreliable hit test target so it makes clicking your button more difficult. Using the default rectangular border or at most - an ellipse shape is a lot simpler and more usable.
I am designing a VBA UserForm (in Excel, if it is relevant) and I would like some controls to be visually grouped together.. but when I put them in a frame, I am getting some undesired results (part of it has to do with the RefEdit control which seems to be particularly unhappy inside a frame).
Is there a way to draw a border around a group of controls on a form without putting them inside a Frame?
Use a label with the caption deleted and the border style set to fmBorderStyleSingle. It may appear on top of your other controls, so right click on it and select "send backwards" until it's behind your other controls.
The best way to do this would be to create the shape over where you need it to be. Drag highlight everything that you want on top of it, then right click and brink it all forwards. Then when you drag your shape back over the top it will in fact be underneath everthing else.
Hope that helps.
This worked for me and I was at first having the same issue where I had to choose to "Send Backward" up to 30 times per label in some cases. I found that hitting the Ctrl-K sends it to the back of all controls with one time hitting these keys.
This is kinda....a two part question. The first one is much more important than the second one, both of these are in the same project, and in vb.net.
How can I constrain the bounds of a rectangle object, which is controlled by a mouse, so it cannot be drawn outside a PictureBox? It is kindof a standard lasso control, the user can click and drag and it will draw a box from the initial click point to the mouse's current location. The starting point is at (rectX,rectY), and the box is drawn to the bottom right using rectDimX and rectDimY (to set the width and height) to see how much of a change has occurred with the mouse. Basically, its what you get with a click and drag on a Windows desktop. The issue here is that the rectangle is able to be drawn outside the PictureBox it is being drawn on, and the next part of the code attempts to reference this location, and then fails with an OutOfMemory exception. This leads me to my second question:
How can I make the rectangle draw in more than the fourth quadrant, which is only positive numbers? If it goes anywhere else, it does not show the rectangle, though it does still have the correct values. I know i could code this four times based on starting location and mouse location, but that would be a huge hassle and a rewrite of the whole rectangle code.
Is there an easy solution for either of these? The first one is a much bigger hassle, as it will be very time consuming if there is no easy way.
Thanks for the help!
For the first part of your question, even if the user drags the mouse beyond the edge of your picture box, you don't have to use those coordinates for your drawing routine. Simply do something like
If (DrawingPoint.X > PictureBox.Right)
DrawingPoint.X = PictureBox.Right // Right-hand limit of picture box
End If
And similar for the Y direction.
As for the negative numbers while drawing, you want to translate screen coordinates to client area coordinates. Have a look at ScreenToClient and ClientToScreen.
I need to create a quick-n-dirty knob control in Visual Basic 2005 Express, the value of which is incremented/decremented by "grabbing" it with the mouse and moving the cursor up/down. Because the knob itself doesn't move, I need to keep tracking the mouse movement outside of the rectangle of the control.
I use a Label with an ImageList to implement this (I have a list of 127 bitmaps representing the knob in various positions).
Which events should I react to?
You need the control to handle three events: Mouse Down, Mouse Move and Mouse Up. On the Mouse Down event, you will need to capture the mouse. This means the mouse messages are sent to the control that has the capture. In the mouse move event, if the input is captured then update the displayed image depending on the amount the mouse moved. In the mouse up event, release the capture if the input is captured.
The boolean jjnguy suggests is unnecessary as the Capture property of a Control is readable so it's possible to determine if the capture has been set.
Your problem will be to determine which bitmap you have to display based upon the coordinates the mouse reports in the mouse_move event. You'll need to perform some magic to transform the coordinates and come up with a value that you can use to pick the right image.
It doesn't sound too complicated, just a little bit of trial and error in the math. Skizz has already show you how to capture the events.