dibs | Ruby wrapper for DIBS payment AIP | Cryptocurrency library
kandi X-RAY | dibs Summary
kandi X-RAY | dibs Summary
DIBS payment API wrapper for Ruby. For now it supports only authorize and capture calls.
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Top functions reviewed by kandi - BETA
- Authorize the client
- Capture a capture
- Perform an HTTP POST request .
- Checks the parameter values for a given parameter .
- Calculate the MD5 digest
- This method is called if the test is defined
dibs Key Features
dibs Examples and Code Snippets
Community Discussions
Trending Discussions on dibs
QUESTION
I have created a consumable COM Class Library.
The class library gets the image of a camera. It's of type Image / Bitmap.
I consume the class library in VB6, and I need to show this image in VB6.
How could I convert this System.Drawing.Image to something that VB6 can display?
Can I use a DIB (using CreateDIBSection, etc.)?
If yes, how exactely can a System.Drawing.Image be converted to a DIB?
Thank you!
...ANSWER
Answered 2020-Apr-22 at 20:03Here's what I've done in the past. First, a couple prerequisites:
- you get a Byte() from the COM Class Library
- you set a reference to Microsoft Windows Image Aquisition Library
With these in place, the code is pretty simple. Camera
is a COM Class Library where the Retrieve
method returns a Byte() that gets loaded into an Image control:
QUESTION
In a camera application bitmap pixel arrays are retrieved from a streaming camera. The pixel arrays are captured by writing them to a named pipe, where on the other end of the pipe, ffmpeg retrieves them and creates an AVI file.
I will need to create one custom frame (with custom text on), and pipe its pixels as the first frame in the resulting movie.
The question is how can I use a TBitmap (for convenience) to
Create a X by Y monochrome (8 bit) bitmap from scratch, with custom text on. I want the background to be white, and the text to be black. (Mostly figured this step out, see below.)
Retrieve the pixel array that I can send/write to the pipe
Step 1: The following code creates a TBitmap and writes text on it:
...ANSWER
Answered 2020-Jan-16 at 01:20TBitmap
has a PixelFormat
property to set the bit depth.
TBitmap
has a HandleType
property to control whether a DDB or a DIB is created. DIB is the default.
Since you are passing BMPs around between different systems, you really should be using DIBs instead of DDBs, to avoid any corruption/misinterpretation of the pixel data.
Also, this line of code:
QUESTION
So I have a working HBITMAP which can be set to the clipboard using SetClipboardData
. What I'm trying to do is send the HBITMAP to another application (without writing anything to disk) which will receive it and be able set it to the clipboard just as the original application could do. I know that you can't just send the handle so I used GetObject
and GetDIBits
and sent the collected data across. I've looked at all the other people's stackoverflow questions about sending hbitmaps over a network but none of the answers given have worked for me.
UPDATE: Code still not working after updated.
This is now what it shows as when I paste the clipboard into mspaint
Here's what my code looks like now:
Client:
...ANSWER
Answered 2019-Nov-23 at 17:02You can save a HBITMAP into memory same as stored in File..
make GDI+ Bitmap using Bitmap::FromHBITMAP()
.
Using CreateStreamOnHGlobal
, you can create stream on memory..
and using GDI+ Bitmap::Save()
, you can write a bitmap file into memory..
send it to socket..
On the other side of socket, memory to Stream and to Bitmap.
Search MSDN. You can find example...
QUESTION
I have a dataframe like below
...ANSWER
Answered 2019-Aug-30 at 05:27#use apply to calculate weighted mean for alll 3 columns in one go.
df2 = df.groupby('Class').apply(lambda x: pd.Series([sum(x.V1*x.wb)/sum(x.wb), sum(x.V2*x.wb)/sum(x.wb), sum(x.V3*x.wb)/sum(x.wb)]))
#rename columns
df2.columns=['V1_M','V2_M','V3_M']
df2
Out[858]:
V1_M V2_M V3_M
Class
A 9.526316 9.157895 10.684211
B 3.900000 7.700000 7.900000
C 5.428571 2.857143 3.000000
D 5.631579 3.473684 5.526316
QUESTION
I am trying to generate bmp
images (graphs) in nodeJS for use in C to display on a low-res display.
Creating the graphs (with d3.js) and converting the svg-code to a bmp works fine (via svg2img and Jimp) and everything appears correctly in the bmp-file.
When I try to display it on the low-res screen, the C code reports that the image height is negative and fails. Now I read that bmp's can be stored top-to-bottom or bottom-to-top (here for example).
In which direction does Jimp work and how could it be reversed?
I have converted the bmp that I generated with Jimp again (using XnConvert) and tried the resulting bmp, which did successfully display on the low-res screen.
In node:
...ANSWER
Answered 2019-Jul-08 at 12:13As pointed out in the comments, making the negative value positive in the bmp-js library that Jimp uses in this line flipped the image but also solved the issue with the C library that required that order.
Using image.flip(false, true) in Jimp, I could keep the correct orientation in the final result.
Issue reported in the bmp-js GitHub.
QUESTION
mongoose
.connect(db,{ useNewUrlParser: true})
.then(() => console.log("MongoDB conected ..."))
.catch(err => console.log(err));
...ANSWER
Answered 2018-Jul-22 at 18:51I have some problem.
please check, that your uri isn't undefined
you can use console.log(db)
QUESTION
When creating a bitmap you have three four choices:
- CreateBitmap: creates a device-dependent bitmap (and it better be compatible with the device you eventually intend to use it on)
- CreateCompatibleBitmap: creates a device-dependent bitmap (compatible with the DC you supply)
- CreateDIBitmap: creates a device-dependent bitmap, but lets you specify the device-independent bits to initialize the bitmap with1 (functionally equivalent to calling CreateCompatibleBitmap + SetDIBits)
- CreateDIBSection: creates a device-independant bitmap (but i have to supply a DC?)
It makes sense why CreateCompatibleBitmap would need an hdc
parameter: it has to know which DC to be compatible with.
Note: It doesn't make sense why CreateBitmap doesn't take anhdc
. How does it know what DC to be compatible with?CreateBitmap doesn't take a DC, and it doesn't know what DC to be compatible with. That's your job. And you better make sure it's compatible with the DC you eventually intended to use it with.
Why does CreateDIBSection take a handle to a device context?
CreateDIBSection function...The CreateDIBSection function creates a DIB that applications can write to directly. The function gives you a pointer to the location of the bitmap bit values. You can supply a handle to a file-mapping object that the function will use to create the bitmap, or you can let the system allocate the memory for the bitmap.
ANSWER
Answered 2019-May-05 at 22:45The answer seems to be:
- the
hdc
is only needed ifusage = DIB_PAL_COLORS
- otherwise (i.e.
usage = DIB_RGB_COLORS
) thenhdc
may be optional
QUESTION
This code gets different scaling depending on which computer I run it on.
...ANSWER
Answered 2018-Dec-02 at 23:19GDI doesn't scale. Use GDI+ for device independence. You will lose antialiasing but most print devices are high DPI anyway.
Does the library in use have an option to use GDI+ instead?
(In my own case, yes. Problem solved.)
QUESTION
I have a MFC application with toolbars (using CMFCToolbar). I create the toolbar bitmap on the fly using bitmaps from files and resources. The DIBs have different color formats.
- So I create an empty bitmap toolbar image compatible to screen DC.
- Then I open all the bitmaps and blit the content to the toolbar bitmap (GDI does colorspace conversion and stretching for me).
- Then I save the bitmap to a 24-bit DIB file.
- Then I create the toolbar object and load the image.
That has worked for ages and is working now except for one case:
Recently we had to enable GDI scaling for Windows 10 1703 and later. On a system with high resolution display and 200% scaling (like Surface) the following effect occurs:
All toolbar icons are distorted.
I also found the reason:
When saving the composed image I only get the top-left quarter of the image. Width and height of the bitmap did not change (say 1024x15) compared to normal resolution display without GDI scaling. But that bitmap only contains the pixels of the top-left quarter (see example below).
So I assume the device context tells Windows about 200% scaling. When blitting from source to target the image gets scaled up automatically but the dimension of the bitmap does not change.
How can I save the unscaled bitmap?
-or-
How can I correctly save the scaled bitmap? Where to get the missing pixels? Where to get proper dimensions? (HBITMAP refers only to unscaled dimensions).
Example:
no GDI scaling, correct:
200% scaling, same dimensions, but only top-left quarter of the correct image:
...ANSWER
Answered 2018-Jul-09 at 07:29Summary and solution:
Let's say we create a memory bitmap compatible to screen format (DDB):
QUESTION
I am trying to capture the screen contents, modify the bits of the grabbed image directly, and then put the result on the clipboard. (Actually, I'm not ultimately interested in the clipboard, but am using it as a testing step.)
I started with the example from one of the answers to this question. However, it uses CreateCompatibleBitmap
, and from what I understand, there is no way to directly access the bits of bitmaps created with that function, so I am trying to use CreateDIBSection
instead. Here is what I have so far:
ANSWER
Answered 2018-May-13 at 15:10Figured it out, finally, when I found this. The API documentation at MSDN is rather vague about this, probably because it itself dates back as far, but it looks like the clipboard functions all use the Windows 3.x style memory allocation system (GlobalAlloc
etc.).
It makes sense for a system clipboard to expose shared memory to the application directly as opposed to the OS having to copy data into internal buffers. But clipboard functionality dates back far enough that the newer page file based schemes for shared memory didn't exist, so they had to use GlobalAlloc
memory. When 32-bit Windows came along, it made more sense to just emulate that mechanism rather than break existing application code.
I strongly suspect that for similar reasons most GDI handles are actually GlobalAlloc
handles as well, and that's why you can pass the return from CreateCompatibleBitmap
to the clipboard. By contrast, CreateDIBSection
does not fully use the old-style allocation, which is obvious from the fact that you can tell it to store the bits in a file mapping. (I suspect that the handle it returns is still from GlobalAlloc
but that the block so allocated in turn contains a direct pointer to virtual memory for the image data, and SetClipboardData
tests for this because it's an obvious "gotcha".)
So I fixed everything by just letting CreateDIBSection
allocate wherever it wants, because one way or another it's not going to be possible to hand that to SetClipboardData
anyway, and then doing this when I want to send to the clipboard:
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