MouseDown And Effect Based On Location Of Mousedown?
Jun 22, 2011
how to view and populate a listview with a text file. Now I come seeking wisdom on how do create an effect based upon the location where a mousedown event occured.
Here is my example. (I like to give simple examples because it helps me learn rather than be given the answer and learn nothing).
I am working in vb.net, in a windows form. I have a map of Western Europe called picturebox1.
I want another form to pop up when a user clicks on a section of picturebox1. For example: I want a "Germany" form to pop up when the user clicks on Germany. And such for if France, Spain, Italy, Austria, England, Scotland, etc...based on the location of the mousedown event.
Historically, when working with a picturebox with sections that were rectangle, I would do little screenshots and overlay them over the picturebox and use that as a cheat.
The challenge here is that the countries are polygons and now I need to learn this for real. I am looking for a little direction on where to go to learn about a mousedown event that causes an effect based upon the location of the mousedown event.
This can be a challenge because each country is of different x, y location coordinates so I image I need to create an elaborate if or case statement to capture and evalute. However, I don't know how to acquire the coordinates of a mousedown.
When a MouseDown event occurs on a System.Windows.Forms.DataGridView I'm performing some action. But now I only want to perform said action if the MouseDown event occurs on any part of the Grid EXCEPT for the Headers (row or column).
I currently have a form that uses Form1_MouseDown and Form1_MouseDoubleClick However, MouseDown is taking presidence over the doubleclick. How can i check to see if the user is doing a doubleclick and fire that event and not the single left click?
In vb6 when you wanted to alter the effect of a mouse click, you could use the mouse down event and alternate the action depending on the value of the shift, control and alternate key. (and also detecting if the right or left mouse button was clicked)
When trying these in my project, I couldn't find the right codes to do this. I can't imagine this feature isn't available so I'm sure I am just messing up somehow.
Im currently writing a program to control a Velleman k8055 usb interface, i started by assigning keyDown and Keysup to control outputs. this worked fine, now ive added buttons to control the same outputs with MouseDown and Mouseup. however when i start to debug, the mouseup and mousedown works fine, but not the keys? is there a special code to use them with one another.
Heres some of the codes for each..
Private Sub Button1_KeyUp(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Button1.KeyUp If e.KeyCode = Keys.I Then ClearDigitalChannel(1)
Another little problem.I have a form with a control (Picturebox or perhaps flash) which uses graphic hotspots instead of controls with handles so when the control receives a mouseclick, it does different things depending on the coordinates of the click.I can obtain the handle for the main control and can see where the hotspots are as they look like buttons and set a point to that location.How can I send a mouseclick (WM_Mousedown?) to the precise point on the control?If I'm not mistaken, using Sendmessage with BM_Click would tell the control it was clicked but without coordinates.I'm trying to do this using Visual Basic from Visual Studio 2008
Is it possible to handle a mouseDown event in VB.Net (2008) regardless of the control firing the mouseDown event? Basically, I just want to catch a mouseDown event at the "form level" and don't want to program mouseDown event handlers in every control. Is there a way to do this?
During a MouseDown event, I issue a DoDragDrop. In the subsequent DragDrop event, I call a DLL to update a Ms-Access database. The SQL is in error so there is an exception. I can catch the exception in the DLL but not in the MouseDown event. Stangely without any try block, stepping over the ExecuteNonQuery() returns me to the line next to the DoDragDrop without the debugger stopping on the exception. In release mode, the exception is completely ignored. There are posts talking about event being "indirect" but I dont understand.
i am trying to create an application like a media player....Say i got an option which changes the background image of the form,like skin or something!now i want to change the mouse events when that background image is active on the form... lemme give u an example of a code...
Private Sub FireToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles FireToolStripMenuItem.Click Me.BackgroundImage = My.Resources.Fire TrackBar1.BackColor = Color.Yellow End Sub
Dim img As New Windows.Forms.PictureBox img.Location = New System.Drawing.Point(newx, newy) img.BackgroundImageLayout = ImageLayout.Zoom img.Size = New System.Drawing.Size(100, 100) img.Name = "img" & t
I need a mousedown function to cover all the images that are produced by the above code.The following code only affects the areas that aren't covered by the images. I just need something that covers the whole form
Private Sub main_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles MyClass.MouseDown MsgBox(Me.GetChildAtPoint(e.Location)) End Sub
I want to implement basic finger gestures within one of my apps, but have got stuck at the first hurdle. There are a few examples on the net, but they seem to use custom controls that do not allow easy use of other controls. I really just need a way to capture the MouseDown/Up methods even through a child control, still allowing clicks to be captured by whatever control has been clicked.
is it possible to draw an accurate circle in vb.net with mouseDown and mouseUp boundaries? I only manage to create circle-settings with rectangular boundaries using DrawEllipse. I've tried to work around it using pythagoras but it just doesn't work and I'm pretty sure I've got my maths right...
Is it possible to define a circle with DrawEllipse(pencil,x1,y1,width,length) ?
in a winform, in vb net,I have a list view with hoverselection set to true. I start a drag and drop operation when the mousedown event is fired, but it's fired only when i release the mouse button on the control or on the dropped control! is it a normal behavior?
i have a datagridview in which i want to know which row is selected by mousedown or keydown.. so in both case i want to use only ONE subroutine which can give e.rowindex , e.colindex value of datagridview...
Example..
Private Sub xyz (s as sender, e as keydownaurguments, m as mousedownaurguments) handles keydown, mousedown '\\ code end sub
I'm working with a project that is WPF and VB.net. I want to visually simulate "dragging" an object (though I do not want to use standard drag and drop for reason of purpose).Basically, I have a label object that, on its MouseDown event, I want it to follow the mouse cursor inside a 640x480 solid-size grid (but not outside of it!). Mind you, this grid is centered inside a full-screen window. Again, the object should not follow the mouse outside of the grid (I'm guessing a "ClipToBounds = True" here)Then, on the label's MouseUp event, I want it to either stay in its current position or return to its original position, as determined by the value of a boolean variable set by another object's MouseEnter property.Note, if it would be easier to work with, I can change the grid to a canvas in a cinch. I'm guessing that would be desirable.
How do I make the object (label) follow the mouse cursor inside the grid/canvas, but not outside of it? This needs to happen on the MouseDown event of the label.How do I make the object "stick" in its current position? (From this, I can probably figure out how to make it return to its original position on my own.
I need to draw several line-graphics on a form, then select and drag individual graphics to new locations. Is it possible for example to give each graphic path an identity when drawn, then select any one (via mousedown, whatever) and link it to the dragged mouse co-ordinates until released? MS Visio has exactly this ability - can it be done in .NET?
Private Sub LMouseDown(ByVal sender As Object, ByVal e As MouseEventArgs) Handles MyBase.MouseDown
If allowMouseCoordinate = False Then Exit Sub Dim xPos As Integer Dim yPos As Integer If e.Button = MouseButtons.Left Then
[Code]...
But this only works if I press on form. But I have a tile based map covering the entire screen.How can I make it so, that It would check if I clicked on a picture box (or simply anything)?
I have two custom action listers. One that handles Mouse.Click and one that handles Mouse.MouseDown. My question to you is, can I delay the mouse down event so that it does not intefere with the code of the Mouse.Click event? I have tried adding a timer and waiting x amount then setting a bool value to true, but the code executes to fast and it skips the other code.
I am writing a windows mobile application based on GPS technology. everything is ready but I need the function which is used to retrieve GPS location coordinates (latitude and longitude).I declared latitude and longitude, but now I need the function of GPS to put it inside a button I created, get longitude and latitude values and save them.
I have a DGV that is getting created on loadup, getting the results from a SP. So in this case, I have a DGV that is not bound to anything. It only get bound to a datasource at runtime.I have specific values that I'm looking for. See code
If e.Value.ToString = "HU-3" Then e.CellStyle.BackColor = Color.Chartreuse e.CellStyle.ForeColor = Color.White
I have a DGV that is getting created on loadup, getting the results from a SP. So in this case, I have a DGV that is not bound to anything. It only get bound to a datasource at runtime.I have specific values that I'm looking for.[code]
i have a chart of images.. and i want to load individual images into picturebox from that chart..chart = big image, eg alphabet chart. (yes i am creating a game for my small nephew.. pictures and alphabet) now, i want to show different pieces of images into picture box. like the A box, b Box etc one option is to cut the chart into pieces, save each piece with different filename and load individual filename into picturebox.but i saw somewhere that we can use pixel location to load images into picturebox..as i recall it required two pixel location, 1 was upper left and other was lower right.. and passing that pixel locations would load the rectangular image between those pixel locations into picturebox?
I'm having some issues with the suppression of the typical javascript and other scripting errors that show in the webbrowser.I have three webbrowsers. The third webbrowser goes out and determines some action based upon location. The one thing I'm having trouble with is this example. It states that it should work but the errors keep on coming.I attached some of the code below. Am I doing something wrong?
I have the Context Menu Options like ( Small Font , Large Font ) based on the selection I want to change the size of the Font in the Controls,Control's Size & location(x,y,height,width). The resize of the controls should not affect the look and feel of the forms.
i am using an unbound datagridview so i can dynamiclly add rows. all that is working fine. but the grid is not is the location i have coded.. i am using the defualt form as a base then coding the unbound stuff in.. should i just create a blank class file and do everything? the only problem i am having is the grid must bees in the correct location according to the pixel point that i have given it. Right now it is placing the grid at point (0,0) no matter what point is entered on the line for location. so what am i missing??????
