L_DrawStarBitmap

Summary

Draws a star on the bitmap.

Syntax

#include "l_bitmap.h"

L_LTIMGSFX_API L_INT L_DrawStarBitmap(pBitmap, pStarInfo, uFlags)

Parameters

pBITMAPHANDLE pBitmap

Pointer to the bitmap handle that references the bitmap on which to draw the star.

pSTARINFO pStarInfo

Pointer to an LPSTARINFO structure that contains star information.

L_UINT32 uFlags

Reserved for future use. Must be 0.

Returns

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

Comments

This function does not support signed data images. It returns the error code ERROR_SIGNED_DATA_NOT_SUPPORTED if a signed data image is passed to this function.

If the bitmap has a region, the effect will be applied on the region only.

This function supports 12- and 16-bit grayscale and 48- and 64-bit color images. Support for 12- and 16-bit grayscale and 48- and 64-bit color images is available in the Document and Medical Imaging toolkits.

To update a status bar or detect a user interrupt during execution of this function, refer to L_SetStatusCallback.

This function does not support 32-bit grayscale images. It returns the error code ERROR_GRAY32_UNSUPPORTED if a 32-bit grayscale image is passed to this function.

Star Draw Function - Before

Star Draw Function - Before

Star Draw Function - After

Star Draw Function - After

View additional platform support for this Star Draw function.

Required DLLs and Libraries

Platforms

Win32, x64.

See Also

Functions

Topics

Example

L_INT DrawStarBitmapExample(L_VOID) 
{ 
   L_INT nRet; 
   BITMAPHANDLE LeadBitmap;   /* Bitmap handle for the image */ 
   STARINFO StarInfo; 
 
   /* Load a bitmap at its own bits per pixel  */ 
   nRet = L_LoadBitmap(MAKE_IMAGE_PATH(TEXT("ImageProcessingDemo\\Image3.cmp")), &LeadBitmap, sizeof(BITMAPHANDLE), 0, ORDER_BGR, NULL, NULL);  
   if(nRet !=SUCCESS) 
      return nRet; 
 
   StarInfo.uStructSize     = sizeof(STARINFO); 
   StarInfo.nAngle            = 0; 
   StarInfo.nAngleOpac   = 0; 
   StarInfo.nBorderOpac  = 0; 
   StarInfo.nDistOpac      = 0; 
   StarInfo.nPhase            = 0; 
   StarInfo.nSpokeDiv     = 0; 
   StarInfo.pCenter.x       = LeadBitmap.Width/2; 
   StarInfo.pCenter.y       = LeadBitmap.Height/2; 
   StarInfo.uFlag              = STR_INSIDE; 
   StarInfo.uHoleSize      = 50; 
   StarInfo.uOpacity        = 100; 
   StarInfo.uSpoke           = 5; 
   StarInfo.uStarHeight    = LeadBitmap.Height/2; 
   StarInfo.uStarWidth    = LeadBitmap.Width/2; 
   StarInfo.crFillUpper    = RGB(255, 0, 0); 
   StarInfo.crFillLower    = RGB(0, 0, 255); 
 
   nRet = L_DrawStarBitmap(&LeadBitmap, &StarInfo, 0); 
   if(nRet !=SUCCESS) 
      return nRet; 
   nRet = L_SaveBitmap(MAKE_IMAGE_PATH(TEXT("Result.BMP")), &LeadBitmap, FILE_BMP, 24, 0, NULL); 
   if(nRet !=SUCCESS) 
      return nRet; 
   //free bitmap  
   if(LeadBitmap.Flags.Allocated)   
      L_FreeBitmap(&LeadBitmap);   
   return SUCCESS; 
} 
Help Version 22.0.2022.8.3
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LEADTOOLS Raster Imaging C API Help

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© 1991-2022 LEAD Technologies, Inc. All Rights Reserved.