I'd like to have scrollbars with no extension - that is no scrollbar is shown but a transparent scroll thumb which shows and hides automatically.
This may not be possible with Codename One, am I right?
You can override getSideGap to always return 0 and it should work. This is something we had as a demo way back in the LWUIT days.
Related
How can I disable the default scrolling effect of a menu and just use a vertical scrollbar. I am able to use the scrollbar when I set overflowY to 'auto'. However, the mouse scroll wheel doesn't work as expected anymore, and the behavior in general is just wonky. I suspect it is because both scrolling is in effect and they are comflicting with each other.
I'm not sure if there is a config option that I am missing. The weird behavior can be seen here: Fiddle
Have you tried setting a height / maxHeight on the menu and setting overflowY:'scroll' ?
I'm working around this issue by simply embedding a panel with a fixed size as a menu item, and then adding all the components to the panel instead. This gives me a lot more flexibility to layout the items, and not have to worry about the inconsistent scrolling of an overflown menu.
I have created a usercontrol that is essentially a text editor (using Graphics.Drawstring in OnPaint).
I have set AutoScroll = true, and AutoScrollMinSize values appropriately. Everything is working how it should...
EXCEPT, i would like the control to scroll itself WHILST I am currently scrolling (i.e. click and drag the scroll bar... and whilst it is being dragged the control should be scrolling the entire time). At the moment it only scrolls when the scroll bar is released (mouse up).
I have tried implementing _Scroll and invalidating the control, but that just makes it flicker uncontrollably.
I cannot find any examples online for this, due to it being difficult to describe!
Can anyone point me in the right direction please?
Control.Invalidate() will make something flicker badly. I faced this problem drawing cross-hairs over a mouse position on a PictureBox drawing a line chart before. The trick is to use (and I cant remember which one is best to come first)
Control.Update();
Control.Refresh();
in the Scroll event. Depending on what else you are drawing in the Control and how you are drawing it this may be better for you. Also this is tested on PictureBox, Control may be another matter.
Hi everyone I would like to implement an ImageViewer (like the one in Facebook for example) in a WPF application
I already have a ListBox whith my pictures, it works well. But I would like to add pop "image full size" when the user double click on one of them. (something like in FB, with a fade out of the background etc).
Currently I'm thinking of to use a Window...Do you have a better idea of what I should use ?
i would probably use a window for that as well. Then you can easily put an opacity animation when the window loads to give it the fade in and fade out effect
You could also use a Popup control.
It comes with some some built in (but very limited) animations, like fade, see PopupAnimation.
I'd try that and if it doesn't fit your needs, I second bflosabre91 oppionion and would use a separate opacity animated window.
But bear in mind that with an additional window you could have negative side effects e.g always sync the window positions correctly, handle task switches (ie. correctly hide the window in the taskbar/tasklist)
Alright, try as I might, I cannot for the life of me get rid of this tiny little border around my buttons.
Edit: I should mention, in case I didn't make it clear, these are buttons with an image on them, set to flat with the button sized to the image.
Images below:
Number one, I can't for the life of me get these borders to GO AWAY. I've checked everything I can think of. They're:
flat
border 0
no margins
no padding
manually sized to the size of the image (75px)
in a table layout where the columns are all:
manually sized to the width of the image (75px)
borderless
Nothing seems to really "work" to get rid of these. If I size the columns down to be 74px instead of 75px, most of them go away, but a few remain. I've triple and quadruple checked the images, and they don't have anything that I can pick up on that should be causing this... no transparency around the borders, definitely no border that looks like that.
Which leads me to the second problem:
Settings button when dialog is small...
Settings button when dialog is stretched out.
Settings button is also in the same table layout panel.
I've checked all the settings on the table layout panel as well.. I can't find any padding or margin or anything settings that suggest this should be happening.
Does anyone have any experience with this? What am I missing..?
Simple solution: using directly a PictureBox as if it was a button. You can change your image on mouse over or mouse click.
Have you tried a Toolbar/strip/whatever it's called these days? Probably not going to help as I believe it pads on your behalf, but worth a shot.
In the end you can toss the buttons in the trash and write your own control. A single control that manages N buttons will work well here.
I don't understand your second problem. What's the problem? It'll be fixed if you roll your own control anyhow.
While not a fix for the spacing issue, as a workaround you can make that gray gradient currently "behind" the "tabs" and control panel image into a BackgroundImage for the TableLayoutPanel using BackgroundImageLayout of Stretch. While not fixing the spacing issue, it would make it unnoticeable.
Writing a winforms control has its challenges (experience speaking here). I would agree that that is whats needed however. Depending on your project you may consider using XAML and WPF. It provides that fine detail you seem to be looking for in you application.
There are ways to host XAML controls in a winform app, but if you went this route it would be best to create a native WPF application. The reverse is also true (winform controls in a WPF app).
Did you check if the image has transparent pixels around the graphic pixels you want?
May be a simple crop solution.
I am developing a form in .NET Compact Framework, which hosts a variable number of controls. Every control should have the same width as the form. When there are only a few controls, no vertical scrollbar appears. When there are more controls than they can fit in one form, a vertical scrollbar appears. The width of the controls should then be modified, so that no horizontal scrollbar appears.
What is the best way to achieve this? I am interested in a solution that will work in all platforms/screen sizes and that can support screen orientation changes.
If I get this right, at one point, both a vertical and horizontal scrollbar appear, and you want only the vertical scrollbar? Doesn't setting the Anchor of each control to "Top|Left|Right" solve this problem automatically?
If every control is to be the same width as the form, why not just Dock every control to Top (or Bottom)? It'll take care of the resizing for you then. It might not look very attractive however, so I suggest adding in some empty Panels (docked the same way) to be used as vertical spacers.
I did some quick testing, and it seems, when you add controls, the panel raises the resize event when the added control tiggers the scollbars to go visible. The annoying part is here that the resize event is triggered a couple of times during startup :(
But knowing the compact framework, this might be your best shot at handling this.
Normally on the full framework you could if the DisplayRectangle is bigger than the size of the panel, but no such thing exists on the cf.
Hope this is of some help, I'll see if I can find anything more in the morning.