Platform Package reference: Function EwGetAutoObject()

Welcome to Embedded Wizard

Quick Tour - a Tutorial

Working with Embedded Wizard

Build Environments

Embedded Wizard Studio

Programming language Chora

Framework Mosaic

Platform Integration Aspects

Framebuffer Concepts

Target Configuration

Memory Footprint

Extern Bitmap interface

Integrating an External Application

Open-CMSIS-Pack Tutorial

Implementing Prototyper intrinsics

Certification Aspects

Platform Package reference

Function EwAlloc()

Function EwAddHeapMemoryPool()

Function EwAllocUserColor()

Function EwAnyPendingSignals()

Function EwBeginUpdate()

Function EwBeginUpdateArea()

Function EwColorToIndex()

Function EwCompString()

Function EwConfigViewport()

Function EwCreateBitmap()

Function EwDoneGraphicsEngine()

Function EwDoneHeap()

Function EwDoneViewport()

Function EwDumpHeap()

Function EwEnableGfxTaskTracing()

Function EwEndUpdate()

Function EwFindUserColor()

Function EwFree()

Function EwFreeBitmap()

Function EwFreeUserColor()

Function EwGetAutoObject()

Function _GetAutoObject()

Function EwGetHeapInfo()

Function EwGetLanguage()

Function EwGetStringLength()

Function EwGetUtf8StringLength()

Function EwGetStyles()

Function EwIndexToColor()

Function EwInitGraphicsEngine()

Function EwInitHeap()

Function EwInitInvocations()

Function EwInitViewport()

Function EwInvoke()

Function EwInvokeCopy()

Function EwLockBitmap()

Function EwLockObject()

Function _LockObject()

Function EwModifyBitmapPalette()

Function EwNewColor()

Function EwNewObject()

Function EwNewObjectIndirect()

Function _NewObject()

Function EwNewPoint()

Function EwNewRect()

Function EwNewString()

Function EwNewStringAnsi()

Function EwNewStringChar()

Function EwNewStringUtf8()

Function EwNextTimerExpiration()

Function EwPrint()

Function EwPrintPerfCounters()

Function EwPrintProfilerStatistic()

Function EwProcessSignals()

Function EwProcessTimers()

Function EwReclaimMemory()

Function EwRegisterFlashAreaReader()

Function _RequestUpdate()

Function EwResetPerfCounters()

Function EwSetLanguage()

Function EwSetStackAddressArea()

Function EwSetStyles()

Function EwSetUserColor()

Function EwStringToAnsi()

Function EwStringToUtf8()

Function EwUnlockBitmap()

Function EwUnlockObject()

Function _UnlockObject()

Function EwVerifyHeap()

Basic Data Type Definitions

Type XBitmapLock

Type XInvokeProc

Type XViewportProc

Error and Warning Codes

Platform Package reference: Function EwGetAutoObject()

Description of the function EwGetAutoObject() available in all Platform Packages for C compatible target systems. This function is intended to be used when integrating the Embedded Wizard created GUI application with the underlying graphics subsystem, graphics hardware or other external GUI applications coexisting on the same system.

Declaration

XObject EwGetAutoObject( const XVariant* aAutoObject, XClass aClass )

Parameters

aAutoObject

Pointer to a data structure representing the autoobject to access. This data structure and all associated contents are generated by Embedded Wizard.

aClass

Pointer to data structure representing the class of the autoobject to access. The specified class has to match with the class defined originally in the autoobject member.

Discussion

The function EwGetAutoObject() returns an autoobject identified by aAutoObject. The function verifies whether the required object is already instantiated and if it's true, the existing instance is returned immediately. If no instance of the desired autoobject could be found, EwGetAutoObject() prepares a new object of the class aClass and initializes it properly. For example:

ApplicationDeviceClass device = EwGetAutoObject( &ApplicationDeviceObject, ApplicationDeviceClass );

The created object will remain in memory as long as the object is in use. Objects, which are not in use anymore are automatically released during the next EwReclaimMemory() invocation.