Note: As of March 1, , this version of EZTwain is no longer for sale. We are now selling licenses for EZTwain Pro 4, which is technically very similar but has. Hi, I wrote some sample vi for the EZtwain DLL from Dosadi. You can Which functionality missing in eztwain classic vs pro version for you?. ABSTRACT. The EZTWAIN library has been around for a long time. With Visual C and Visual Basic it is pretty easy to import the API calls from.

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The current default source will be highlighted initially.

Liberty BASIC Programmer’s Encyc – EZTwain

A few provide basic information width, height, bitmap depth of the scanned image itself. The function allows the handle of the application hApp be passed, but will accept a 0.

Others are needed to interface with the more complex GUI structuring demanded by other languages. Dosadi continues to make this dll available, but offers no support for it.

Scanner Application With EZTWAIN Library – C++ Tutorials |

If only one TWAIN device is installed on a system, it is selected ‘ automatically, so there is no need for the user to do Select Source. The function then returns the handle of the device independent bitmap hDIB. A problem with this approach is that the handle of the DIB is not necessarily the handle of the bitmap recognizable to Liberty BASIC, but more a pointer to where the bitmap lies in memory. You may want to check to be sure you have the most current version v1.


You can download eztwaindemo at http: It takes a little time on the first call, after that it’s fast, ‘ just testing a flag. Only a few of the functions will be addressed in this article. A return value of 1 indicates the user has made a selection. This article is intended to bridge that gap. A return of 0 indicates a successful save. You can view Don’s original code at http: Unable to lock DIB.

A return of 1 indicates one or more scanners have been installed to the system. To conserve classlc and time, the preliminary steps of checking version, existence of, and selection of the scanner has been omitted. EZTwain will default to the last scanner chosen. If this call fails, the clipboard is either empty or ‘ contains the old contents. Others will be addressed in a planned follow up article. The function does not check if the scanner is connected or turned on.

DLL, multiplied by If you use this package, you assume all responsibility for the results or lack thereof. There are at least 53 functions in EZTW Bitmap saved to disk. Fortunately, only a few functions are required for allowing your Liberty BASIC program to communicate with a scanner and access the images.


As documented by Alyce, the clipboard must first be opened, the contents retrieved, and then the clipboard closed. DLL has been placed in the public domain eatwain Dosadi.

Did you cancel without saving? The TWAIN spec calls for this feature to be available in ‘ your user interface, preferably as described.

Dosadi places EZTwain Classic in the public domain, and makes no claim or warranty of any kind regarding this software. Passing 0 seems safest.

Eztwain classic download

The user won’t know the difference. Many of these functions control the scanner device itself.

The most current version of EZTW Your app has one of ‘ these, right? The dll has been widely used since its introduction in It’s free, it’s simple, and it works.


Divide that integer by to get the version. The user initiates the scan through the scanner’s own application window. Supported values of wPizTypes are documented within the comments of the function. Unfortunately, this is not the case. BMP Windows Bitmap file.

Once scanned, the image is saved to disk in.