FREInvalidateBitmapDataRect()

Usage

FREResult FREInvalidateBitmapDataRect( 
            FREObject object, 
            uint32_t x, 
            uint32_t y, 
            uint32_t width, 
            uint32_t height 
);

Parameters

object

An FREObject that represents a previously acquired ActionScript BitmapData class object.

x

A uint32_t. This value is the x coordinate in terms of pixels. The value is relative to the upper-left corner of the bitmap. Along with the y parameter, it indicates the upper-left corner of the rectangle to invalidate.

y

A uint32_t. This value is the y coordinate in terms of pixels. The value is relative to the upper-left corner of the bitmap. Along with the x parameter, it indicates the upper-left corner of the rectangle to invalidate.

width

A uint32_t. This value is the width in pixels of the rectangle to invalidate.

height

A uint32_t. This value is the height in pixels of the rectangle to invalidate.

Returns

An FREResult. The possible return values include, but are not limited to, the following:

FRE_OK

The function succeeded. The specified rectangle has been invalidated.

FRE_ILLEGAL_STATE

The extension context has not acquired the ActionScript BitmapData object.

FRE_INVALID_OBJECT

The FREObject object parameter is invalid.

FRE_TYPE_MISMATCH

The FREObject object parameter does not represent an ActionScript BitmapData class object.

FRE_WRONG_THREAD

The method was called from a thread other than the one on which the runtime has an outstanding call to a native extension function.

Description

Call this function to invalidate a rectangle of an ActionScript BitmapData class object. Before calling this function, call FREAcquireBitmapData() or FREAcquireBitmapData2() . Call FREReleaseBitmapData() after you are done manipulating and invalidating the bitmap.

Invalidating a rectangle of a BitmapData object indicates to the runtime that it will need to redraw the rectangle.