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dynarithmic / twain_library

Dynarithmic TWAIN Library, Version 5.x
Apache License 2.0
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Error On Windows 10 64 bit Acquiring from asp.net core 3.1 webapi #4

Closed matteosanguin closed 4 years ago

matteosanguin commented 4 years ago

I'm trying to use your the wrapper you wrote "DTWAIN32U.cs" On Windows 10 64 bit from asp.net core 3.1 webapi project compiled and running in 32bit . I don't undestand why but when i acquire

tFileName = "d:\scanedfile.pdf"; StringBuilder szSourceName = new StringBuilder(tFileName); fileType = TwainAPI32.DTWAIN_PDFMULTI;

bError = TwainAPI32.DTWAIN_AcquireFile(_currentDevice, //your sample datasource 32bit tFileName, fileType, (int)TwainAPI32.DTWAIN_USELONGNAME | TwainAPI32.DTWAIN_USENATIVE , TwainAPI32.DTWAIN_PT_DEFAULT, / Use default / TwainAPI32.DTWAIN_ACQUIREALL, / Get all pages / 0, / SHOWUI / 1,/ Close Source when UI is closed / ref status ); i renamed your TwainAPI in TwainAPI32

i have used for the main :

[STAThread] public static void Main(string[] args)

i got this error :

Qt: Untested Windows version 6.2 detected! ds: rescaling... to 1600 x 2200 QWindowsContext: OleInitialize() failed: "COM error 0x80010106 RPC_E_CHANGED_MODE (Unknown error 0x0ffffffff80010106)"

Can you help me ?

dynarithmic commented 4 years ago

Hi,

Does this link address the second issue (concerning the COM error)? Let me know if it does (it has further links to more information).

Unfortunately, my expertise is not in asp.net. If possible, can you put together a Visual Studio project (2015, 2017, or 2019) that I can test with? I have had no issue with the C# demo program, so it's strange that you're getting the asp.net issue.

Also, the first message concerning Qt is one generated from the sample data source provided by the Twain Working Group -- you shouldn't get that error when actually using a "real" TWAIN device, or a different data source.

To remove that message, I would have to change their sample source, or figure out the Qt inner workings. It is a very low priority item at this point.

matteosanguin commented 4 years ago

Hi, thanx for the replay . I have used the library with a kodak scanner and i have no problem with ole,qt ....

Thanx

Matteo