Controlling Painting Properties

When working with digital paint automation, specific properties as well as the background color can be set or retrieved using the following functions:

L_AutGetPaintBkColor

L_AutGetPaintProperty

L_AutSetPaintBkColor

L_AutSetPaintProperty

The LEADTOOLS Digital Paint tools let you manipulate the following attributes:

Each set of characteristics given above has several properties that can be set. This lets the user fine-tune the output. Use the L_AutSetPaintProperty function to set the properties. To retrieve the current settings for the properties, use the L_AutGetPaintProperty function. The following example shows how to manipulate the Shape properties: 

/* this example shows how to change the paint shape properties */ 
L_INT SetPaintShapePropsTest(pAUTOMATIONHANDLE pAutomation) 
{ 
   if (SUCCESS == L_AutIsValid(pAutomation)) /* check the validity of the automation handle */ 
   { 
      PAINTSHAPE shape; 
      /* set the paint shape group properties */ 
      L_AutGetPaintProperty(pAutomation, PAINT_GROUP_SHAPE, &shape); 
      /* make some changes to the required properties */ 
      if (SHAPE_BORDER_STYLE_SOLID == shape.nBorderStyle) 
      { 
         /* set the desired shape properties using the field masks */ 
         shape.nSize = sizeof(PAINTSHAPE); 
         shape.dwMask = PSF_BORDERSTYLE | 
         PSF_BORDERWIDTH | 
         PSF_BORDERENDCAP; 
         shape.nBorderStyle = SHAPE_BORDER_STYLE_DOT; 
         shape.nBorderWidth = 10; 
         shape.nBorderEndCap = SHAPE_BORDER_ENDCAP_ROUND; 
         /*set the paint shape group properties */ 
         L_AutSetPaintProperty(pAutomation, PAINT_GROUP_SHAPE, &shape); 
      } 
      return SUCCESS; 
   } 
   else 
   { 
      return FAILURE; 
   } 
}

For more examples showing the use of digital paint automation, refer to Getting Started.

When the user cuts or deletes some region from a bitmap, an exposed area is left behind This area will be filled by the paint background color, set by the function L_AutSetPaintBkColor. To determine the current paint background color, call L_AutGetPaintBkColor. The following example shows how to retrieve and set the paint background color: 

/* This example will make sure that the BK is not anything but black */ 
L_INT StickToBalck(pAUTOMATIONHANDLE pAutomation) 
{ 
   if (SUCCESS == L_AutIsValid(pAutomation)) /* check the validity of the automation handle */ 
   { 
      COLORREF crBkColor; 
      /* get the current paint automation color */ 
      L_AutGetPaintBkColor(pAutomation, &crBkColor); 
      if (crBkColor != RGB(0, 0, 0)) /* check if its not black */ 
      { 
         /* set the paint automation background color */ 
         L_AutSetPaintBkColor(pAutomation, RGB(0, 0, 0)); 
      } 
      return SUCCESS; 
   } 
   else 
   { 
      return FAILURE; 
   } 
}

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LEADTOOLS Container and Automation C API Help
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