we made asoftware in c++ for sel evaluation test. i want to ask that how can i insert or put a image into it without drawing the image tell me brieffly if u have any idea about it?
Hi dear Jatinder Singh !
There is yet another option instead of drawing an image ! , If you have the raster data of a image in a file ( say let the Image file be .BMP) then you can easily display the contents of the image file using appropriate C/C++ Program , make that all types of image files won't have same internal format !
Before working with image files you have to be familiar with the internal structures of the image file and how the image has been compressed !
Here ill present the sample code that will display the contents of the image file ( .BMP)
char Type; //File type. Set to "BM".
unsigned long Size; //Size in BYTES of the file.
unsigned long Reserved; //Reserved. Set to zero.
unsigned long OffSet; //Offset to the data.
unsigned long headsize; //Size of rest of header. Set to 40.
unsigned long Width; //Width of bitmap in pixels.
unsigned long Height; // Height of bitmap in pixels.
unsigned int Planes; //Number of Planes. Set to 1.
unsigned int BitsPerPixel; //Number of Bits per pixels.
unsigned long Compression; //Compression. Usually set to 0.
unsigned long SizeImage; //Size in bytes of the bitmap.
unsigned long XPixelsPreMeter; //Horizontal pixels per meter.
unsigned long YPixelsPreMeter; //Vertical pixels per meter.
unsigned long ColorsUsed; //Number of colors used.
unsigned long ColorsImportant; //Number of "important" colors.
int ShowBMP(int x, int y, char* FileName)
unsigned char* Datas;
unsigned char c=0;
FILE * fp;
fp = fopen(FileName,"rb");
printf("Error : Unable to open file ..");
fread(&Obj, sizeof(Obj), 1, fp);
if(Obj.BitsPerPixel!=4) // This isn't a 16 color bmp we can read;
printf("Error : File format not supported ..");
Datas=(unsigned char*) calloc(Obj.Width/2+1, sizeof(unsigned char));
fread(Datas, sizeof(unsigned char), Obj.Width/2, fp);
c = (Datas[in] | 0x00) >>4;
c = (Datas[in] | 0xF0) & 0x0F;
int gd , gm ;
gd = VGA ; gm = VGAHI;
The program presented above is strictly compatible with Turbo C/C++ of any versions that support BGI.
Here im unable to present you the bitmap file "sample.bmp" , so i recommend you to crteate your own file to test this program !
While creating your own file make sure that the new (.BMP) file should be compatible with this program ! other wise it ends with undesired results!
Thanks and Regards!
Prince M. Premnath .