decode-dpm-data-matrix.md

layout	default-layout
title	Decode DPM Data Matrix - Dynamsoft Barcode Reader How-to Guides
description	This page shows how to decode DPM Data Matrix.
keywords	dmp, decode, how-to guides
needAutoGenerateSidebar	false
permalink	/introduction/how-to-guide/decode-dpm-data-matrix.html

How-to Guides - Decode DPM Data Matrix

Since version 7.2 of Dynamsoft Barcode Reader SDK, direct part mark (DPM) Data Matrix scanning is supported. To decode DPM codes, some particular settings are required:

The value DPMCRM_GENERAL needs to be set for the parameter [PublicRuntimeSettings]({{ site.structs }}PublicRuntimeSettings.html)->[FurtherModes]({{ site.structs }}FurtherModes.html)->[DPMCodeReadingModes]({{ site.structs }}FurtherModes.html#dpmcodereadingmodes).

The value LM_STATISTICS_MARKS needs to be set for the parameter [PublicRuntimeSettings]({{ site.structs }}PublicRuntimeSettings.html)->[LocalizationModes]({{ site.structs }}PublicRuntimeSettings.html#localizationmodes).

For more information about decoding DPM, see [DPM Decoding]({{ site.scenario_settings }}dpm-decoding.html).

The following code shows how to set the runtime settings for DPM decoding:

char sError[512];
TextResultArray* paryResult = NULL;
CBarcodeReader reader;
PublicRuntimeSettings* runtimeSettings = new PublicRuntimeSettings();
reader.InitLicense("<your license key here>");
reader.GetRuntimeSettings(runtimeSettings);
//turn on the DPM mode
runtimeSettings->furtherModes.dpmCodeReadingModes[0] = DPMCRM_GENERAL;
runtimeSettings->localizationModes[0] = LM_STATISTICS_MARKS;
//update the runtime settings
reader.UpdateRuntimeSettings(runtimeSettings, sError, 512);
reader.DecodeFile("<your image file full path>", "");
reader.GetAllTextResults(&paryResult);
CBarcodeReader::FreeTextResults(&paryResult);