L_PntInit

#include "LtPnt.h"

L_LTPNT_API L_INT L_PntInit(ppPaint)

pointer to a pointer to a paint handle

Initializes the paint handle.

Parameter	Description
ppPaint	Pointer to a pointer to a paint handle to be initialized.

Returns

SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes.

Comments

This function must be called before calling any other paint functions.

A paint handle is valid after calling L_PntInit, and will remain valid until L_PntFree is called.

For every call to L_PntInit there must be a call to L_PntFree.

Required DLLs and Libraries

LTPNT

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application

Example

This example shows the minimum requirements for painting a rectangle shape.

L_INT PntInitExample(HWND hWnd) 
{ 
   L_INT nRet; 
   pPAINTHANDLE pPaint ; 
   HDC          hDC ; 
   RECT         rcShapeRect ; 
   /* Initiate the Paint toolkit */ 
   nRet  = L_PntInit ( &pPaint ); 
   if ( SUCCESS != nRet) 
   { 
      return nRet ; 
   } 
   /*Get the device context*/ 
   hDC = GetDC ( hWnd ) ; 
   /* Set the rectangle coordinates with respect to the DC dimensions*/ 
   SetRect ( &rcShapeRect, 10, 10, 100, 100 ) ; 
   /* Set the DC Extents */ 
   RECT rcClient; 
   GetClientRect(hWnd, &rcClient); 
   nRet = L_PntSetDCExtents ( pPaint, &rcClient ); 
   /* Use the default properties for the shape to draw a rectangle*/ 
   nRet = L_PntDrawShapeRectangle ( pPaint, hDC, &rcShapeRect ) ; 
   if(nRet != SUCCESS) 
      return nRet; 
   /* Release the device context*/ 
   ReleaseDC ( hWnd, hDC ) ; 
   // Free the paint tools handle. 
   L_PntFree ( pPaint ) ; 
   return SUCCESS ; 
}

Help Version 19.0.2017.10.27

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LEADTOOLS Digital Paint C API Help

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Function References

Functions:	L_PntIsValid, L_PntFree
Topics:	DigitalPaint Functions: Initializing and Freeing the Paint Handle
	Initializing and Freeing DigitalPaint Handles