BMP file header. More...
Collaboration diagram for T_BMP_Header:
Data Fields | |
| byte | Signature [2] |
| ='BM' = 0x4D42 More... | |
| dword | Size_1 |
| file size More... | |
| word | Reserved_1 |
| 0 More... | |
| word | Reserved_2 |
| 0 More... | |
| dword | Offset |
| Offset of bitmap data start. More... | |
| dword | Size_2 |
| BITMAPINFOHEADER size. More... | |
| dword | Width |
| Image Width. More... | |
| int32_t | Height |
| Image Height. signed: negative means a top-down bitmap (rare) More... | |
| word | Planes |
| Should be 1. More... | |
| word | Nb_bits |
| Bits per pixel : 1,2,4,8,16,24 or 32. More... | |
| dword | Compression |
| Known values : 0=BI_RGB, 1=BI_RLE8, 2=BI_RLE4, 3=BI_BITFIELDS, 4=BI_JPEG, 5=BI_PNG. More... | |
| dword | Size_3 |
| (optional) byte size of bitmap data More... | |
| dword | XPM |
| (optional) horizontal pixels-per-meter More... | |
| dword | YPM |
| (optional) vertical pixels-per-meter More... | |
| dword | Nb_Clr |
| number of color indexes used in the table. 0 for default (1 << Nb_bits) More... | |
| dword | Clr_Imprt |
| number of color indexes that are required for displaying the bitmap. 0 : all colors are required. More... | |
Detailed Description
BMP file header.
Field Documentation
◆ Signature
| byte T_BMP_Header::Signature[2] |
='BM' = 0x4D42
Referenced by Load_BMP(), Save_BMP(), and Test_BMP().
◆ Size_1
| dword T_BMP_Header::Size_1 |
file size
Referenced by Load_BMP(), Save_BMP(), and Test_BMP().
◆ Reserved_1
| word T_BMP_Header::Reserved_1 |
0
Referenced by Load_BMP(), Save_BMP(), and Test_BMP().
◆ Reserved_2
| word T_BMP_Header::Reserved_2 |
0
Referenced by Load_BMP(), Save_BMP(), and Test_BMP().
◆ Offset
| dword T_BMP_Header::Offset |
Offset of bitmap data start.
Referenced by Load_BMP(), Save_BMP(), and Test_BMP().
◆ Size_2
| dword T_BMP_Header::Size_2 |
BITMAPINFOHEADER size.
Referenced by Load_BMP(), Load_ICO(), Save_BMP(), Save_ICO(), and Test_BMP().
◆ Width
| dword T_BMP_Header::Width |
Image Width.
Referenced by Load_BMP(), Load_ICO(), Save_BMP(), and Save_ICO().
◆ Height
| int32_t T_BMP_Header::Height |
Image Height. signed: negative means a top-down bitmap (rare)
Referenced by Load_BMP(), Load_ICO(), Save_BMP(), and Save_ICO().
◆ Planes
| word T_BMP_Header::Planes |
Should be 1.
Referenced by Load_BMP(), Load_ICO(), Save_BMP(), and Save_ICO().
◆ Nb_bits
| word T_BMP_Header::Nb_bits |
Bits per pixel : 1,2,4,8,16,24 or 32.
Referenced by Load_BMP(), Load_ICO(), Save_BMP(), and Save_ICO().
◆ Compression
| dword T_BMP_Header::Compression |
Known values : 0=BI_RGB, 1=BI_RLE8, 2=BI_RLE4, 3=BI_BITFIELDS, 4=BI_JPEG, 5=BI_PNG.
Referenced by Load_BMP(), Load_ICO(), Save_BMP(), and Save_ICO().
◆ Size_3
| dword T_BMP_Header::Size_3 |
(optional) byte size of bitmap data
Referenced by Load_BMP(), Load_ICO(), Save_BMP(), and Save_ICO().
◆ XPM
| dword T_BMP_Header::XPM |
(optional) horizontal pixels-per-meter
Referenced by Load_BMP(), Load_ICO(), Save_BMP(), and Save_ICO().
◆ YPM
| dword T_BMP_Header::YPM |
(optional) vertical pixels-per-meter
Referenced by Load_BMP(), Load_ICO(), Save_BMP(), and Save_ICO().
◆ Nb_Clr
| dword T_BMP_Header::Nb_Clr |
number of color indexes used in the table. 0 for default (1 << Nb_bits)
Referenced by Load_BMP(), Load_ICO(), Save_BMP(), and Save_ICO().
◆ Clr_Imprt
| dword T_BMP_Header::Clr_Imprt |
number of color indexes that are required for displaying the bitmap. 0 : all colors are required.
Referenced by Load_BMP(), Load_ICO(), Save_BMP(), and Save_ICO().
The documentation for this struct was generated from the following file:
