I tried to set backcolor to transparent by solution given at msdn but failed is there any way to make background transparent
http://msdn.microsoft.com/en-us/library/wk5b13s4(VS.71).aspx
Yes, set the form's TransparencyKey property. Make the BackColor the same value. You need to pick a color that won't appear anywhere else in the form. Color.Fuchsia is a good choice, it's a fuchsed-up color.
This isn't a good idea for a splash screen. The point of having one is that the user can see it. The linked MSDN article is only appropriate for (some) child controls, not the form.
Related
The look I'm going for is like
where the sidebar is semi-transparent and the background can be seen through. However TransparencyKey only takes into account the pixels at the top, if there is another panel on top that means that together they do not fit the transparency key then it will be opaque.
I have the TransparencyKey set to Fuchsia and the grapefruit sidebar is on top and is changed to sidebar.BackColor = Color.FromArgb(128,255,255,255); on load.
As you see the TransparencyKey only works on the top.
I have also tried setting the transparency on the form with undesired results.
How would I go about making the sidebar translucent?
Solution v
You just can't do that in winforms. Period. It's an antiquated technology that doesn't support "real" transparency. Whenever you see the word "transparent", it really means your control will inherit the back color of its parent. It does not mean you can see things that are behind it.
You may be able to do it with WPF, though I'm not entirely sure.
As noted by #JeremyThompson WPF is absolutely fine at doing this.
Inside the window include WindowStyle="None" AllowsTransparency="True" Background="Transparent" and then use panels/canvases as normal.
I have a problem with:
BackColor = Color.Transparent;
It's not working correctly. I have a form with a blue background, and a picturebox with a picture loaded in it. It's not actually taking what's in the picture, but rather - the form's background color. Please tell me there's a simple way to go around this?
What you see in the following screenshot is a custom usercontrol with it's backColor set to transparent, on top of a picture, in a form with a blue background.
I need the usercontrol to display what's UNDER it, as real transparency, it should be showing the gradient and part of the image.
Try setting the picture box to be the parent of the custom user control.
myControl.Parent = this.myPictureBox;
Try calling "SetStyle(ControlStyles.SupportsTransparentBackColor, true);" on your user control constructor.
more details at: http://msdn.microsoft.com/en-us/library/wk5b13s4(v=vs.90).aspx
I've set a label's BackColor property to 'Transparent' in windows form but its just White? It's not going transparent?
Anyone know why this is happening?
The label does not support transparency, you must create your own unique custom control, you can see these code examples.
http://www.codeproject.com/KB/dotnet/transparent_controls_net.aspx
http://www.codeproject.com/KB/vb/uLabelX.aspx
I started teaching myself C# a week ago. I started by writing Tetris to get myself acquainted with the language. I got the main game mechanics working by painting onto presized bitmap and displaying it in a picturebox, which at the time was the same size of the window. Now I have expanded the windows size and started adding other controls to the side of the picture box.
The problem is, now that I have expanded the window, displaying the form background, the background color is permanently white or I get a weird white to black faded look in the bottom corner.
I have tried several things:
- set the form backcolor manually, but it is only reflected on the labels
- checked that the transparencykey is empty
- set transparencykey to an unused color, nothing changes - added a bmp as the form's background image, still stays white - checked my code to see if I was every writing directly to the form background
I can't fingure out how to fix this; does anyone have any ideas?
EDIT: I found the answer to my question. SetStyle(ControlStyles.Opaque, true) was called in my constructor. I'm not sure what exactly that does, but I commented it out and it fixed my problem.
Please list out the requirements means exactly what you need?
After I read your question. The following are my understandings.
If your problem is with changing window size, then
make use of Split container, which is
available in toolbox from
'Containers' group.
set its Dock property to fill to
fill entire window if
resized/maximized.
Then use the right pane to contain your picture box and left pane for other controls.
If you require, you may also set dock property of picture box to fill to its parent container means right pane.
If your problem is with background color of the window, then
Actually Background color issue comes, If the form is an Mdi Container.
Check whether IsMdiContainer property is set to false. If true it is an MdiContainer.
The following code block sets Mdi Forms' backcolor to the forms' backcolor.
foreach (Control c in this.Controls)
{
if (c is MdiClient)
{
c.BackColor = this.BackColor;
}
}
I found the answer to my question. SetStyle(ControlStyles.Opaque, true) was called in my initialization. I'm not sure what exactly that does, but it was the cause of my background color issue.
I have made a TabControl and want to use some controls (labels, textboxes, buttons and combobox drop-downs). The problem is that when I select a tab, the default background color is not the same as the default background color of the form the controls used to be on. The color of the tab and the controls are too similar and it doesn't look good.
I have looked, but people seem to say that it's impossible to color tabs. What is a good solution to this? Should I put some kind of frame, label or something else inside the tab to make the background darker?
It's easy to get your tab pages to use the same background color as your form:
Make sure that the TabPage you want to change is visible in the designer. Click on it to select it.
In the Properties Window, find the UseVisualStyleBackColor property, and set it to False.
And as a bonus, once you've set this property to False, you can specify any background color that you want for the TabPage using its BackColor property.
The reason that this works is that you're forcing the tab page not to render with visual styles (i.e., themes as defined by Windows). The default theme actually paints tab pages a slightly lighter shade of the color used to paint other 3D elements (like forms and buttons). The problem (under the Aero theme in particular) is that the color of the standard 3D elements is so light already that the tab pages almost look white!
If you're satisfied with the contrast of the controls against the standard background color of your form, I suggest that you simply set the UseVisualStyleBackColor property to False and leave it at that without specifying a custom background color. Respecting the user's default theme is generally the best practice, rather than trying to skin an application yourself.
EDIT: Note that this will not change the color of the tabs themselves at the top of the TabControl. To do that, you're going to have to specify it as owner-drawn and handle its DrawItem event, forcing you to do all of the painting yourself. In most cases, however, this is not necessary.