i have developed custom control which inherits Button control, actually i`m creating button with one picturebox and label on Button(picturebox and label are child controls). I created same method and wired child controls to behave as clicking on parent(Button), it works but its slow no mather what i do(tried with InvokeOnClick, me.performclick, Me.OnClick(New EventArgs()), tried with same method for all events), but clicking on label or picture box is slow, i need it to be fast as clicking directly on button cause in my application is very important to be able to click on button twice in second for example, if you click on label or picturebox twice at second it will fire just one time not 2.
What i have been thinking of is to make label and picturebox invisible for event is it possible or anyother idea ?
Thanks in forward
You are doing battle with ControlStyles.StandardDoubleClick. Which is turned on for the PictureBox and Label controls but turned off for Button.
So when you are clicking rapidly on either the picturebox or the label then they'll generate the DoubleClick event instead of the Click event. You'll interpret that as "slow" since you probably didn't write a handler for that event. Subscribing the event and calling Me.OnClick is a workaround.
Just don't do this. PictureBox and Label are point-and-click convenience controls but they are extraordinarily wasteful. It takes just two lines of code in the button's OnPaint() method override to get the exact same outcome, minus the overhead and the event problems. Use e.Graphics.DrawImage() to draw the pb's image and TextRenderer.DrawText() to draw the label's text.
Using MouseDown event ensures the event is triggered once per click, regardless of click/doubleclick.
Related
VB PictureBox_mouseEnter() event not firing when the picture box is placed inside a custom control
I need to write code to do different things when a mouse enters and leaves a PictureBox (used to display images). When I place the PictureBox directly on a WindowsForm, the _mouseEnter() event works fine. But if I put the PictureBox on a custom control, and add the control to a WindowsForm, the _mouseEnter() event never fires. Why?
The reason I want to embed the PicturBox in a custom control is that I can reuse the custom control on other Windows Forms.
Thank you for your insights.
I have two canvases located to each other. One is supposed to be a kind of workspace you can add items to, select and rearange them. The other one is just a property view.
What I want to do is to be able to draw a rectrangle on the workspace. As long as the user holds down the mouse button the rectangle will show up. If he releases the button all items that are beneath the rectangle will be selected. This currently works good with the MouseDown, MouseStillDown und MouseUp events. I'm drawing another rectangle shaed canvas on the workspace which will be transformed on every MouseStillDown event and the selection will occur on the MouseUp event. My problem is, that if the user hold down the mouse button and moves it to the property canvas and then releases the button the MouseUp event from the workspace isn't called. Neither is the one from the property since it's missing a MouseDown event. So if the user releases the button there the selection won't work and the rectangle stays in the workspace.
Is there an oppurtunity to somehow avoid this? Or is there a better way to determine the area the user selected with it's mouse while holding down the left mouse button?
I have a tabpage. And I have a combobox in it.
When I hover my mouse over it, my tabpage's paint function runs.
Why?
The Combobox has no functions handled. It is just a Combobox.
I move the combobox out of the tabpage, and now the tabpage won't paint when I hover my mouse over the combobox. Weird..
This isn't specific to a TabPage, the same thing happens when you put the combo on a form. It is affected by visual styles, the container paint requests stop when you turn that off. I'm guessing it has something to do with the rounded corners you get when the DropDown property is set to DropDownList, the combo glows on a mouse hover. With it probably asking the container control to draw the pixels in the corner. Explaining it for DropDown = DropDown is harder.
Same thing happens with a Button, the container control paint is documented in the Reference Source to support transparency effects. Even if the button doesn't have anything transparent. Visual styles is less than optimized like this, perhaps. It is otherwise very similar to what WPF does. Long story short, this is normal.
I have fully programmed my Minesweeper; however, I was having difficulty trying to get the same result as in the original minesweeper for when a user clicks and moves the mouse around while still right clicking. You may notice that in the original Minesweeper, when a user does as explained, the tiles that the user goes to will then look blank. If the user releases the mouse, the current tile they hovered to will become the clicked tile. In my Minesweeper, the tile I click on is the only one that will look blank, and when I hover over to the next tiles, they do not get blank like the first one I clicked on. Then when I release my mouse button when over to another tile, the very first tile I clicked on is the one that gets uncovered. Here is what I already have used. I have the MouseDown event which checks to see if the game has been started to begin the game timer. It also has some color properties for tiles when I click on them and I set a boolean to true or false depending on the user left or right click. I have the MouseUp event which looks at the boolean to determin what the user had clicked on the mouse so I know if I flag or simply click to uncover. Then I have the MouseEnter and MouseLeave which are needed to yield the proper glow I want for the tiles. What should I do to get the same results as in the original Minesweeper with the MouseDown and MouseEnter into other tiles? I tried many other things such as MouseEnter, MouseMove and MouseHover, but all seem to yield the same crummy result as what I already have.
Just another piece of information, the MouseEvents are built in to a UserControl which I then use as my tile in Minesweeper. It almost as if when an event is active, another one cannot be done at the same time.
You might want to consider, DragOver and Drag related events
I have a button and inside my button I have an image control. When the users click on the image I'd like to animate the button so it appears the button was pressed. I don't really care whether the actual button press event fires or not--it's the illusion of a button press I want to see.
Note: the only options I see on the web involve writing directly to the Windows API--a level of complexity and non-upgradability I really don't want to get into.
Why not just use two different images, one for a normal state, and another for when your button is being pressed.
If you want to go for more complicated route try using GDI+. Here is a quick sample tutorial on how to do this.
Why are you using an image control inside your button control instead of using the button control's Image property?
Using the Image property of the button will give you a button with an image that the user can press and that will raise the OnClick event without doing any extra work or re-implementing features that are already available.
I ended up making my picturbox look like a button by giving it a raised border style. Then on the mouseclick event I simulate the look of a button press by changing the border style for a few hundred miliseconds.
Private Sub simulateButtonPress(ByRef pictureBox As Infragistics.Win.UltraWinEditors.UltraPictureBox)
pictureBox.BorderStyle = Infragistics.Win.UIElementBorderStyle.Inset
Application.DoEvents()
System.Threading.Thread.Sleep(400)
pictureBox.BorderStyle = Infragistics.Win.UIElementBorderStyle.Raised
Application.DoEvents()
End Sub