MdmrAlloc

See also

User Guide:

Steps to read dot-matrix strings from an image

Reference:

MdmrControl MdmrControlStringModel MdmrFree MdmrImportFont MdmrRead MsysAlloc

Availability

Not available in MIL-Lite

Available in MIL

Available on Windows

Available on Linux

Not supported on:

Not supported on Matrox Indio (Update 53 or Update 68) (w)

Not supported on Matrox Concord PoE with ToE (Update 82) (z)

Fully supported on:

Fully supported on Host system (a)

Fully supported on Matrox GigE Vision driver (MIL 10, Update 25, Update 54, or Update 85)* (c)

Fully supported on Matrox Morphis (g)

Fully supported on Matrox Morphis QxT (h)

Fully supported on Matrox Orion HD (i)

Fully supported on Matrox Radient eCL (j)

Fully supported on Matrox Radient eV-CXP (MIL 10 or Update 29)* (k)

Fully supported on Matrox Solios eA/XA (l)

Fully supported on Matrox Solios ecl/xcl/ev-cl (m)

Fully supported on Matrox USB3 Vision driver (Update 19) (o)

Fully supported on Matrox RadientPro-CL (Update 7) (p)

Fully supported on Matrox Radient eV-CL (Update 27 or 74) (r)

Fully supported on Matrox Iris GTR (Update 28 or Update 68) (t)

Fully supported on Matrox Clarity UHD (Update 36 or 76) (u)

Fully supported on Matrox GenTL driver (Update 34) (v)

Fully supported on Matrox Rapixo CXP (Update 75 or Update 84) (y)

Fully supported on Matrox Rapixo CL Pro (Update 96) (aa)

* Refer to the MIL system-specific information
in the MIL Reference for the minimum update required.

For any information regarding a MIL system added during a MIL Update, see the MIL system’s release note

Available on Non-Matrox computer

Available on Matrox 4Sight-X

Available on Matrox 4Sight GP/GPm

Available on Matrox Supersight

Function map

Examples

dmreditfontfile.cpp
dmrgenfontfile.cpp
dmrshowfontfile.cpp
mdmr.cpp
mdmr.cs
mdmr.vb
variousdotmatrixreadings.cpp

Function Map

- SysId

Table:

For specifying the system identifier

- ContextType

Table:

For specifying the type of context to allocate

- ControlFlag

- ContextDmrIdPtr

Return value

Compilation information

Synopsis

Allocate a SureDotOCR context.

Syntax

MIL_ID MdmrAlloc(

MIL_ID SysId,	//in
MIL_INT64 ContextType,	//in
MIL_INT64 ControlFlag,	//in
MIL_ID *ContextDmrIdPtr	//out

)

Description

This function allocates a SureDotOCR context on the specified system. A SureDotOCR context contains information required to use the MIL SureDotOCR functions, which are prefixed with Mdmr; these functions allow you to read strings of dot-matrix text. Global settings, fonts, and string models are all held in a SureDotOCR context; use MdmrControl(), MdmrImportFont(), and MdmrControlStringModel() to set these up, respectively. Use MdmrRead() to perform the actual read operation. To read successfully, a SureDotOCR context must have at least one font and one string model.

A SureDotOCR context internally handles characters in Unicode, though you can program in both a Unicode or ASCII environment.

When the context is no longer required, release its memory using MdmrFree().

Note that this function reference has not been updated for a MIL system added during a MIL update. Refer to the MIL system's release note to see which MIL system’s documentation you should use in its place and any possible differences.

Parameters

This function is not supported on the selected boards.

This function reference has not been updated for the selected MIL system. To show the content of this page, choose a second MIL system; refer to the MIL system's release note to see which MIL system’s documentation to choose and any possible differences.

Parameters

SysId INQ

Specifies the identifier of the system on which to allocate the SureDotOCR context. Set this parameter to one of the values below:

For specifying the system identifier
Value	Description
M_DEFAULT_HOST	Specifies the default Host system of the current MIL application.
MIL system identifier	Specifies a valid system identifier, previously allocated using MsysAlloc().

ContextType

Specifies the type of context to allocate. Set this parameter to the value below:

For specifying the type of context to allocate
Value	Description
M_DOT_MATRIX	Specifies to allocate a MIL SureDotOCR context.

ControlFlag

Reserved for future expansion and must be set to M_DEFAULT.

ContextDmrIdPtr

Specifies the address of the variable in which to write the SureDotOCR context identifier. Since the MdmrAlloc() function also returns the context identifier, you can set this parameter to M_NULL. If allocation fails, M_NULL is written as the identifier.

Return value

The returned value is the SureDotOCR context identifier if the allocation is successful. If allocation fails, M_NULL is returned.

Compilation information

Header	Include mil.h.
Library	Use mil.lib; mildmr.lib.
DLL	Requires mil.dll; mildmr.dll.