Reading and displaying BMP files in Symbian

1 read:

First, we define the location of the bitmap to be read:

_ values (kmultibitmapfilename, "\ System \ apps \ graphics \ images. MBM ");

images. MDM is the compressed and packaged result of our bitmap file. It is a multi-bitmap file. We need to define the following in the. MMP file:

Start bitmap images. MBM

header

targetpath \ System \ apps \ graphics

sourcepath .. \ bitmaps

source C12 image1.bmp

source C12 image2.bmp

End

The system generates a Bitmap header file. mbg, which provides an access bitmap ID. For example, the images. mbg file in epoc32 \ include contains the following content:

Enum tmbmimages {

embmimagesimage1,

embmimagesimage2,

     };

Next we will define:

Cfbsbitmap * iimage1;

Cfbsbitmap * iimage2;

Then we can read the bitmap file in MDM:

Iimage1 = new (eleave) cfbsbitmap ();

cleanupstack: pushl (iimage1);

tint loadexception = iimage1-> load (kmultibitmapfilename, embmimagesimage1);

User: leaveiferror (loadexception );

Cleanupstack: Pop (iimage1 );

2 display:

Before display, remember to set the image display size:

Tsize asize (2000,200 0 );
Iimage1-> setsizeintwips (asize );

 

By using the drawbitmap () method, you can display the read or drawn bitmap in the window.

void drawbitmap (const tpoint & atopleft, const cfbsbitmap * asource)

here, atopleft specifies the coordinates in the upper left corner of the bitmap to be drawn, and asource gives the content of the bitmap to be drawn.

void drawbitmap (const trect & adestrect, const cfbsbitmap * asource)

draws the bitmap asource in the specified rectangle area adestrect.

void drawbitmap (const trect & adestrect, const cfbsbitmap * asource, const trect & asourcerect)

In the given bitmap asource, extract the asourcerect area and draw its content in the specified rectangle area adestrect.