Scott Duensing
847db7586b
Add comprehensive README covering architecture, API usage, build instructions, tested drivers, binary patching details, and DGROUP layout. Expand file header comments in all library sources and headers to document module responsibilities, data flow, and key constraints. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
165 lines
4.8 KiB
C
165 lines
4.8 KiB
C
#ifndef WINTYPES_H
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#define WINTYPES_H
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// ============================================================================
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// wintypes.h - Windows 16-bit type definitions and constants
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//
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// Provides the fundamental types used by the Win16 API and DDI:
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// basic integer types (WORD, DWORD, BOOL16), 16-bit handle types,
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// far pointer (segment:offset) helpers, COLORREF, geometry types
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// (Point16T, Rect16T), GetWinFlags constants, GlobalAlloc flags,
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// and raster operation codes (ROP2 and ROP3).
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//
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// Uses stdint.h types for portability (DJGPP's uint32_t is unsigned
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// long, not unsigned int).
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// ============================================================================
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#include <stdint.h>
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// ============================================================================
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// Windows 16-bit basic types
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// ============================================================================
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typedef uint16_t WORD;
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typedef int16_t SWORD;
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typedef uint32_t DWORD;
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typedef int32_t LONG;
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typedef uint8_t BYTE;
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typedef int16_t BOOL16;
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// 16-bit handle types
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typedef uint16_t HANDLE16;
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typedef uint16_t HWND16;
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typedef uint16_t HDC16;
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typedef uint16_t HMODULE16;
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typedef uint16_t HINSTANCE16;
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typedef uint16_t HGLOBAL16;
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typedef uint16_t HBITMAP16;
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typedef uint16_t HBRUSH16;
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typedef uint16_t HPEN16;
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typedef uint16_t HPALETTE16;
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typedef uint16_t HRGN16;
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typedef uint16_t HCURSOR16;
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typedef uint16_t ATOM16;
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// ============================================================================
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// Far pointer types (16:16 segment:offset, stored little-endian)
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// ============================================================================
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typedef struct __attribute__((packed)) {
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uint16_t offset;
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uint16_t segment;
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} FarPtr16T;
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#define FARPTR16_NULL ((FarPtr16T){0, 0})
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static inline FarPtr16T makeFarPtr16(uint16_t seg, uint16_t off)
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{
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FarPtr16T fp;
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fp.segment = seg;
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fp.offset = off;
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return fp;
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}
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static inline uint32_t farPtr16ToLinear(FarPtr16T fp)
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{
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// For real-mode addresses only; PM addresses need descriptor lookup
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return ((uint32_t)fp.segment << 4) + fp.offset;
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}
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// ============================================================================
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// Color types
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// ============================================================================
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typedef uint32_t ColorRefT;
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#define RGB_RED(c) ((uint8_t)(c))
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#define RGB_GREEN(c) ((uint8_t)((c) >> 8))
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#define RGB_BLUE(c) ((uint8_t)((c) >> 16))
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#define MAKE_RGB(r, g, b) ((ColorRefT)(((BYTE)(r)) | ((WORD)((BYTE)(g)) << 8) | ((DWORD)((BYTE)(b)) << 16)))
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// Palette index color reference
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#define PALETTEINDEX(i) ((ColorRefT)(0x01000000L | (DWORD)(WORD)(i)))
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// ============================================================================
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// Geometry types (16-bit, packed for compatibility with Win16 structures)
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// ============================================================================
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typedef struct __attribute__((packed)) {
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int16_t x;
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int16_t y;
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} Point16T;
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typedef struct __attribute__((packed)) {
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int16_t left;
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int16_t top;
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int16_t right;
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int16_t bottom;
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} Rect16T;
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// ============================================================================
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// Windows constants
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// ============================================================================
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// GetWinFlags return values
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#define WF_PMODE 0x0001
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#define WF_CPU286 0x0002
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#define WF_CPU386 0x0004
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#define WF_CPU486 0x0008
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#define WF_STANDARD 0x0010
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#define WF_ENHANCED 0x0020
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#define WF_80x87 0x0400
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// GlobalAlloc flags
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#define GMEM_FIXED 0x0000
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#define GMEM_MOVEABLE 0x0002
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#define GMEM_ZEROINIT 0x0040
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#define GHND (GMEM_MOVEABLE | GMEM_ZEROINIT)
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#define GPTR (GMEM_FIXED | GMEM_ZEROINIT)
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// Boolean
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#define WIN_FALSE 0
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#define WIN_TRUE 1
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// Null handle
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#define NULL16 ((uint16_t)0)
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// ============================================================================
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// Raster operation codes (ROP2 and ROP3)
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// ============================================================================
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#define R2_BLACK 1
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#define R2_NOTMERGEPEN 2
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#define R2_MASKNOTPEN 3
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#define R2_NOTCOPYPEN 4
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#define R2_MASKPENNOT 5
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#define R2_NOT 6
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#define R2_XORPEN 7
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#define R2_NOTMASKPEN 8
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#define R2_MASKPEN 9
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#define R2_NOTXORPEN 10
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#define R2_NOP 11
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#define R2_MERGENOTPEN 12
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#define R2_COPYPEN 13
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#define R2_MERGEPENNOT 14
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#define R2_MERGEPEN 15
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#define R2_WHITE 16
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// Common ROP3 codes
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#define SRCCOPY 0x00CC0020L
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#define SRCPAINT 0x00EE0086L
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#define SRCAND 0x008800C6L
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#define SRCINVERT 0x00660046L
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#define SRCERASE 0x00440328L
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#define NOTSRCCOPY 0x00330008L
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#define NOTSRCERASE 0x001100A6L
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#define MERGECOPY 0x00C000CAL
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#define MERGEPAINT 0x00BB0226L
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#define PATCOPY 0x00F00021L
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#define PATPAINT 0x00FB0A09L
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#define PATINVERT 0x005A0049L
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#define DSTINVERT 0x00550009L
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#define BLACKNESS 0x00000042L
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#define WHITENESS 0x00FF0062L
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#endif // WINTYPES_H
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