re-slice linux/win32 backends, top-level folder is backend (demon/win32 -> win32/demon, etc.); os_gfx -> window_manager; fix linux / opengl builds for new apis/types

2026-09-24 02:00:05 +00:00 · 2026-05-08 15:21:22 -07:00
parent aea4a4ff9d
commit 9a7782de47
50 changed files with 12981 additions and 19517 deletions
@@ -0,0 +1,359 @@
+// Copyright (c) Epic Games Tools
+// Licensed under the MIT license (https://opensource.org/license/mit/)
+
+#ifndef DEMON_CORE_WIN32_H
+#define DEMON_CORE_WIN32_H
+
+////////////////////////////////
+//~ rjf: Windows Includes
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <psapi.h>
+#include <tlhelp32.h>
+
+////////////////////////////////
+//~ rjf: Win32 Exception Codes
+
+#define DMN_W32_EXCEPTION_BREAKPOINT                     0x80000003u
+#define DMN_W32_EXCEPTION_SINGLE_STEP                    0x80000004u
+#define DMN_W32_EXCEPTION_LONG_JUMP                      0x80000026u
+#define DMN_W32_EXCEPTION_ACCESS_VIOLATION               0xC0000005u
+#define DMN_W32_EXCEPTION_ARRAY_BOUNDS_EXCEEDED          0xC000008Cu
+#define DMN_W32_EXCEPTION_DATA_TYPE_MISALIGNMENT         0x80000002u
+#define DMN_W32_EXCEPTION_GUARD_PAGE_VIOLATION           0x80000001u
+#define DMN_W32_EXCEPTION_FLT_DENORMAL_OPERAND           0xC000008Du
+#define DMN_W32_EXCEPTION_FLT_DEVIDE_BY_ZERO             0xC000008Eu
+#define DMN_W32_EXCEPTION_FLT_INEXACT_RESULT             0xC000008Fu
+#define DMN_W32_EXCEPTION_FLT_INVALID_OPERATION          0xC0000090u
+#define DMN_W32_EXCEPTION_FLT_OVERFLOW                   0xC0000091u
+#define DMN_W32_EXCEPTION_FLT_STACK_CHECK                0xC0000092u
+#define DMN_W32_EXCEPTION_FLT_UNDERFLOW                  0xC0000093u
+#define DMN_W32_EXCEPTION_INT_DIVIDE_BY_ZERO             0xC0000094u
+#define DMN_W32_EXCEPTION_INT_OVERFLOW                   0xC0000095u
+#define DMN_W32_EXCEPTION_PRIVILEGED_INSTRUCTION         0xC0000096u
+#define DMN_W32_EXCEPTION_ILLEGAL_INSTRUCTION            0xC000001Du
+#define DMN_W32_EXCEPTION_IN_PAGE_ERROR                  0xC0000006u
+#define DMN_W32_EXCEPTION_INVALID_DISPOSITION            0xC0000026u
+#define DMN_W32_EXCEPTION_NONCONTINUABLE                 0xC0000025u
+#define DMN_W32_EXCEPTION_STACK_OVERFLOW                 0xC00000FDu
+#define DMN_W32_EXCEPTION_INVALID_HANDLE                 0xC0000008u
+#define DMN_W32_EXCEPTION_UNWIND_CONSOLIDATE             0x80000029u
+#define DMN_W32_EXCEPTION_DLL_NOT_FOUND                  0xC0000135u
+#define DMN_W32_EXCEPTION_ORDINAL_NOT_FOUND              0xC0000138u
+#define DMN_W32_EXCEPTION_ENTRY_POINT_NOT_FOUND          0xC0000139u
+#define DMN_W32_EXCEPTION_DLL_INIT_FAILED                0xC0000142u
+#define DMN_W32_EXCEPTION_CONTROL_C_EXIT                 0xC000013Au
+#define DMN_W32_EXCEPTION_FLT_MULTIPLE_FAULTS            0xC00002B4u
+#define DMN_W32_EXCEPTION_FLT_MULTIPLE_TRAPS             0xC00002B5u
+#define DMN_W32_EXCEPTION_NAT_CONSUMPTION                0xC00002C9u
+#define DMN_W32_EXCEPTION_HEAP_CORRUPTION                0xC0000374u
+#define DMN_W32_EXCEPTION_STACK_BUFFER_OVERRUN           0xC0000409u
+#define DMN_W32_EXCEPTION_INVALID_CRUNTIME_PARAM         0xC0000417u
+#define DMN_W32_EXCEPTION_ASSERT_FAILURE                 0xC0000420u
+#define DMN_W32_EXCEPTION_NO_MEMORY                      0xC0000017u
+#define DMN_W32_EXCEPTION_THROW                          0xE06D7363u
+#define DMN_W32_EXCEPTION_SET_THREAD_NAME                0x406d1388u
+#define DMN_w32_EXCEPTION_CLRDBG_NOTIFICATION            0x04242420u
+#define DMN_w32_EXCEPTION_CLR                            0xE0434352u
+#define DMN_W32_EXCEPTION_RADDBG_SET_THREAD_COLOR        0x00524144u
+#define DMN_W32_EXCEPTION_RADDBG_SET_BREAKPOINT          0x00524145u
+#define DMN_W32_EXCEPTION_RADDBG_SET_VADDR_RANGE_NOTE    0x00524156u
+
+////////////////////////////////
+//~ rjf: Win32 Exception ExceptionInformation Codes
+//
+// used as a subcode, apparently in all cases, for DMN_W32_EXCEPTION_STACK_BUFFER_OVERRUN.
+// need to somehow pipe this through & interpret it correctly in outer layers... @fastfail
+
+#define DMN_W32_FAST_FAIL_LEGACY_GS_VIOLATION               0
+#define DMN_W32_FAST_FAIL_VTGUARD_CHECK_FAILURE             1
+#define DMN_W32_FAST_FAIL_STACK_COOKIE_CHECK_FAILURE        2
+#define DMN_W32_FAST_FAIL_CORRUPT_LIST_ENTRY                3
+#define DMN_W32_FAST_FAIL_INCORRECT_STACK                   4
+#define DMN_W32_FAST_FAIL_INVALID_ARG                       5
+#define DMN_W32_FAST_FAIL_GS_COOKIE_INIT                    6
+#define DMN_W32_FAST_FAIL_FATAL_APP_EXIT                    7
+#define DMN_W32_FAST_FAIL_RANGE_CHECK_FAILURE               8
+#define DMN_W32_FAST_FAIL_UNSAFE_REGISTRY_ACCESS            9
+#define DMN_W32_FAST_FAIL_GUARD_ICALL_CHECK_FAILURE         10
+#define DMN_W32_FAST_FAIL_GUARD_WRITE_CHECK_FAILURE         11
+#define DMN_W32_FAST_FAIL_INVALID_FIBER_SWITCH              12
+#define DMN_W32_FAST_FAIL_INVALID_SET_OF_CONTEXT            13
+#define DMN_W32_FAST_FAIL_INVALID_REFERENCE_COUNT           14
+#define DMN_W32_FAST_FAIL_INVALID_JUMP_BUFFER               18
+#define DMN_W32_FAST_FAIL_MRDATA_MODIFIED                   19
+#define DMN_W32_FAST_FAIL_CERTIFICATION_FAILURE             20
+#define DMN_W32_FAST_FAIL_INVALID_EXCEPTION_CHAIN           21
+#define DMN_W32_FAST_FAIL_CRYPTO_LIBRARY                    22
+#define DMN_W32_FAST_FAIL_INVALID_CALL_IN_DLL_CALLOUT       23
+#define DMN_W32_FAST_FAIL_INVALID_IMAGE_BASE                24
+#define DMN_W32_FAST_FAIL_DLOAD_PROTECTION_FAILURE          25
+#define DMN_W32_FAST_FAIL_UNSAFE_EXTENSION_CALL             26
+#define DMN_W32_FAST_FAIL_DEPRECATED_SERVICE_INVOKED        27
+#define DMN_W32_FAST_FAIL_INVALID_BUFFER_ACCESS             28
+#define DMN_W32_FAST_FAIL_INVALID_BALANCED_TREE             29
+#define DMN_W32_FAST_FAIL_INVALID_NEXT_THREAD               30
+#define DMN_W32_FAST_FAIL_GUARD_ICALL_CHECK_SUPPRESSED      31         // Telemetry, nonfatal
+#define DMN_W32_FAST_FAIL_APCS_DISABLED                     32
+#define DMN_W32_FAST_FAIL_INVALID_IDLE_STATE                33
+#define DMN_W32_FAST_FAIL_MRDATA_PROTECTION_FAILURE         34
+#define DMN_W32_FAST_FAIL_UNEXPECTED_HEAP_EXCEPTION         35
+#define DMN_W32_FAST_FAIL_INVALID_LOCK_STATE                36
+#define DMN_W32_FAST_FAIL_GUARD_JUMPTABLE                   37         // Known to compiler, must retain value 37
+#define DMN_W32_FAST_FAIL_INVALID_LONGJUMP_TARGET           38
+#define DMN_W32_FAST_FAIL_INVALID_DISPATCH_CONTEXT          39
+#define DMN_W32_FAST_FAIL_INVALID_THREAD                    40
+#define DMN_W32_FAST_FAIL_INVALID_SYSCALL_NUMBER            41         // Telemetry, nonfatal
+#define DMN_W32_FAST_FAIL_INVALID_FILE_OPERATION            42         // Telemetry, nonfatal
+#define DMN_W32_FAST_FAIL_LPAC_ACCESS_DENIED                43         // Telemetry, nonfatal
+#define DMN_W32_FAST_FAIL_GUARD_SS_FAILURE                  44
+#define DMN_W32_FAST_FAIL_LOADER_CONTINUITY_FAILURE         45         // Telemetry, nonfatal
+#define DMN_W32_FAST_FAIL_GUARD_EXPORT_SUPPRESSION_FAILURE  46
+#define DMN_W32_FAST_FAIL_INVALID_CONTROL_STACK             47
+#define DMN_W32_FAST_FAIL_SET_CONTEXT_DENIED                48
+#define DMN_W32_FAST_FAIL_INVALID_IAT                       49
+#define DMN_W32_FAST_FAIL_HEAP_METADATA_CORRUPTION          50
+#define DMN_W32_FAST_FAIL_PAYLOAD_RESTRICTION_VIOLATION     51
+#define DMN_W32_FAST_FAIL_LOW_LABEL_ACCESS_DENIED           52         // Telemetry, nonfatal
+#define DMN_W32_FAST_FAIL_ENCLAVE_CALL_FAILURE              53
+#define DMN_W32_FAST_FAIL_UNHANDLED_LSS_EXCEPTON            54
+#define DMN_W32_FAST_FAIL_ADMINLESS_ACCESS_DENIED           55         // Telemetry, nonfatal
+#define DMN_W32_FAST_FAIL_UNEXPECTED_CALL                   56
+#define DMN_W32_FAST_FAIL_CONTROL_INVALID_RETURN_ADDRESS    57
+#define DMN_W32_FAST_FAIL_UNEXPECTED_HOST_BEHAVIOR          58
+#define DMN_W32_FAST_FAIL_FLAGS_CORRUPTION                  59
+#define DMN_W32_FAST_FAIL_VEH_CORRUPTION                    60
+#define DMN_W32_FAST_FAIL_ETW_CORRUPTION                    61
+#define DMN_W32_FAST_FAIL_RIO_ABORT                         62
+#define DMN_W32_FAST_FAIL_INVALID_PFN                       63
+#define DMN_W32_FAST_FAIL_GUARD_ICALL_CHECK_FAILURE_XFG     64
+#define DMN_W32_FAST_FAIL_CAST_GUARD                        65         // Known to compiler, must retain value 65
+#define DMN_W32_FAST_FAIL_HOST_VISIBILITY_CHANGE            66
+#define DMN_W32_FAST_FAIL_KERNEL_CET_SHADOW_STACK_ASSIST    67
+#define DMN_W32_FAST_FAIL_PATCH_CALLBACK_FAILED             68
+#define DMN_W32_FAST_FAIL_NTDLL_PATCH_FAILED                69
+#define DMN_W32_FAST_FAIL_INVALID_FLS_DATA                  70
+#define DMN_W32_FAST_FAIL_INVALID_FAST_FAIL_CODE            0xFFFFFFFF
+
+////////////////////////////////
+//~ rjf: Win32 Register Codes
+
+#define DMN_W32_CTX_X86       0x00010000
+#define DMN_W32_CTX_X64       0x00100000
+
+#define DMN_W32_CTX_INTEL_CONTROL       0x0001    // segss, rsp, segcs, rip, and rflags
+#define DMN_W32_CTX_INTEL_INTEGER       0x0002    // rax, rcx, rdx, rbx, rbp, rsi, rdi, and r8-r15
+#define DMN_W32_CTX_INTEL_SEGMENTS      0x0004    // segds, seges, segfs, and seggs
+#define DMN_W32_CTX_INTEL_FLOATS        0x0008    // xmm0-xmm15
+#define DMN_W32_CTX_INTEL_DEBUG         0x0010    // dr0-dr3 and dr6-dr7
+#define DMN_W32_CTX_INTEL_EXTENDED      0x0020
+#define DMN_W32_CTX_INTEL_XSTATE        0x0040
+
+#define DMN_W32_CTX_X86_ALL (DMN_W32_CTX_X86 | \
+DMN_W32_CTX_INTEL_CONTROL | DMN_W32_CTX_INTEL_INTEGER | \
+DMN_W32_CTX_INTEL_SEGMENTS | DMN_W32_CTX_INTEL_DEBUG | \
+DMN_W32_CTX_INTEL_EXTENDED)
+#define DMN_W32_CTX_X64_ALL (DMN_W32_CTX_X64 | \
+DMN_W32_CTX_INTEL_CONTROL | DMN_W32_CTX_INTEL_INTEGER | \
+DMN_W32_CTX_INTEL_SEGMENTS | DMN_W32_CTX_INTEL_FLOATS | \
+DMN_W32_CTX_INTEL_DEBUG)
+
+////////////////////////////////
+//~ rjf: Per-Entity State
+
+typedef enum DMN_W32_EntityKind
+{
+  DMN_W32_EntityKind_Null,
+  DMN_W32_EntityKind_Root,
+  DMN_W32_EntityKind_Process,
+  DMN_W32_EntityKind_Thread,
+  DMN_W32_EntityKind_Module,
+  DMN_W32_EntityKind_COUNT
+}
+DMN_W32_EntityKind;
+
+typedef struct DMN_W32_Entity DMN_W32_Entity;
+struct DMN_W32_Entity
+{
+  DMN_W32_Entity *first;
+  DMN_W32_Entity *last;
+  DMN_W32_Entity *next;
+  DMN_W32_Entity *prev;
+  DMN_W32_Entity *parent;
+  DMN_W32_EntityKind kind;
+  U32 gen;
+  U64 id;
+  HANDLE handle;
+  Arch arch;
+  union
+  {
+    struct
+    {
+      U64 injection_address;
+      B32 did_first_bp;
+    }
+    proc;
+    struct
+    {
+      U64 thread_local_base;
+      U64 last_name_hash;
+      U64 name_gather_time_us;
+    }
+    thread;
+    struct
+    {
+      Rng1U64 vaddr_range;
+      U64 address_of_name_pointer;
+      B32 is_main;
+      B32 name_is_unicode;
+    }
+    module;
+  };
+};
+
+typedef struct DMN_W32_EntityNode DMN_W32_EntityNode;
+struct DMN_W32_EntityNode
+{
+  DMN_W32_EntityNode *next;
+  DMN_W32_Entity *v;
+};
+
+typedef struct DMN_W32_EntityIDHashNode DMN_W32_EntityIDHashNode;
+struct DMN_W32_EntityIDHashNode
+{
+  DMN_W32_EntityIDHashNode *next;
+  DMN_W32_EntityIDHashNode *prev;
+  U64 id;
+  DMN_W32_Entity *entity;
+};
+
+typedef struct DMN_W32_EntityIDHashSlot DMN_W32_EntityIDHashSlot;
+struct DMN_W32_EntityIDHashSlot
+{
+  DMN_W32_EntityIDHashNode *first;
+  DMN_W32_EntityIDHashNode *last;
+};
+
+////////////////////////////////
+//~ rjf: Injection Types
+
+typedef struct DMN_W32_InjectedBreak DMN_W32_InjectedBreak;
+struct DMN_W32_InjectedBreak
+{
+  U64 code;
+  U64 user_data;
+};
+
+#define DMN_W32_INJECTED_CODE_SIZE 32
+
+////////////////////////////////
+//~ rjf: Image Info Types
+
+typedef struct DMN_W32_ImageInfo DMN_W32_ImageInfo;
+struct DMN_W32_ImageInfo
+{
+  Arch arch;
+  U32 size;
+  U64 tls_index;
+};
+
+////////////////////////////////
+//~ rjf: Dynamically-Loaded Win32 Function Types
+
+typedef HRESULT DMN_W32_GetThreadDescriptionFunctionType(HANDLE hThread, WCHAR **ppszThreadDescription);
+
+////////////////////////////////
+//~ rjf: Shared State Bundle
+
+typedef struct DMN_W32_Shared DMN_W32_Shared;
+struct DMN_W32_Shared
+{
+  // rjf: top-level info
+  Arena *arena;
+  String8List env_strings;
+  
+  // rjf: access locking mechanism
+  Mutex access_mutex;
+  B32 access_run_state;
+  
+  // rjf: detaching info
+  Arena *detach_arena;
+  DMN_HandleList detach_processes;
+  
+  // rjf: entity state
+  Arena *entities_arena;
+  DMN_W32_Entity *entities_base;
+  DMN_W32_Entity *entities_first_free;
+  U64 entities_count;
+  DMN_W32_EntityIDHashSlot *entities_id_hash_slots;
+  U64 entities_id_hash_slots_count;
+  DMN_W32_EntityIDHashNode *entities_id_hash_node_free;
+  
+  // rjf: launch state
+  B32 new_process_pending;
+  
+  // rjf: run results
+  B32 resume_needed;
+  U32 resume_pid;
+  U32 resume_tid;
+  B32 exception_not_handled;
+  
+  // rjf: halting info
+  DMN_Handle halter_process;
+  U32 halter_tid;
+};
+
+////////////////////////////////
+//~ rjf: Globals
+
+global DMN_W32_Shared *dmn_w32_shared = 0;
+global DMN_W32_Entity dmn_w32_entity_nil = {&dmn_w32_entity_nil, &dmn_w32_entity_nil, &dmn_w32_entity_nil, &dmn_w32_entity_nil, &dmn_w32_entity_nil};
+global DMN_W32_GetThreadDescriptionFunctionType *dmn_w32_GetThreadDescription = 0;
+thread_static B32 dmn_w32_ctrl_thread = 0;
+
+////////////////////////////////
+//~ rjf: Basic Helpers
+
+internal U64 dmn_w32_hash_from_string(String8 string);
+internal U64 dmn_w32_hash_from_id(U64 id);
+
+////////////////////////////////
+//~ rjf: Entity Helpers
+
+//- rjf: entity <-> handle
+internal DMN_Handle dmn_w32_handle_from_entity(DMN_W32_Entity *entity);
+internal DMN_W32_Entity *dmn_w32_entity_from_handle(DMN_Handle handle);
+
+//- rjf: entity allocation/deallocation
+internal DMN_W32_Entity *dmn_w32_entity_alloc(DMN_W32_Entity *parent, DMN_W32_EntityKind kind, U64 id);
+internal void dmn_w32_entity_release(DMN_W32_Entity *entity);
+
+//- rjf: kind*id -> entity
+internal DMN_W32_Entity *dmn_w32_entity_from_kind_id(DMN_W32_EntityKind kind, U64 id);
+
+////////////////////////////////
+//~ rjf: Module Info Extraction
+
+internal String8 dmn_w32_full_path_from_module(Arena *arena, DMN_W32_Entity *module);
+
+////////////////////////////////
+//~ rjf: Win32-Level Process/Thread Reads/Writes
+
+//- rjf: processes
+internal U64 dmn_w32_process_read(HANDLE process, Rng1U64 range, void *dst);
+internal B32 dmn_w32_process_write(HANDLE process, Rng1U64 range, void *src);
+internal String8 dmn_w32_read_memory_str(Arena *arena, HANDLE process_handle, U64 address);
+internal String16 dmn_w32_read_memory_str16(Arena *arena, HANDLE process_handle, U64 address);
+#define dmn_w32_process_read_struct(process, vaddr, ptr) dmn_w32_process_read((process), r1u64((vaddr), (vaddr)+(sizeof(*ptr))), ptr)
+#define dmn_w32_process_write_struct(process, vaddr, ptr) dmn_w32_process_write((process), r1u64((vaddr), (vaddr)+(sizeof(*ptr))), ptr)
+internal DMN_W32_ImageInfo dmn_w32_image_info_from_process_base_vaddr(HANDLE process, U64 base_vaddr);
+
+//- rjf: threads
+internal B32 dmn_w32_thread_read_reg_block(Arch arch, HANDLE thread, void *reg_block);
+internal B32 dmn_w32_thread_write_reg_block(Arch arch, HANDLE thread, void *reg_block);
+
+//- rjf: remote thread injection
+internal DWORD dmn_w32_inject_thread(HANDLE process, U64 start_address);
+
+#endif // DEMON_CORE_WIN32_H
@@ -0,0 +1,123 @@
+// Copyright (c) Epic Games Tools
+// Licensed under the MIT license (https://opensource.org/license/mit/)
+
+#ifndef WIN32_WINDOW_MANAGER_H
+#define WIN32_WINDOW_MANAGER_H
+
+////////////////////////////////
+//~ rjf: Includes / Libraries
+
+#include <uxtheme.h>
+#include <dwmapi.h>
+#include <shellscalingapi.h>
+#pragma comment(lib, "gdi32")
+#pragma comment(lib, "dwmapi")
+#pragma comment(lib, "UxTheme")
+#pragma comment(lib, "comdlg32")
+#ifndef WM_NCUAHDRAWCAPTION
+#define WM_NCUAHDRAWCAPTION (0x00AE)
+#endif
+#ifndef WM_NCUAHDRAWFRAME
+#define WM_NCUAHDRAWFRAME (0x00AF)
+#endif
+
+////////////////////////////////
+//~ rjf: Windows
+
+typedef struct OS_W32_TitleBarClientArea OS_W32_TitleBarClientArea;
+struct OS_W32_TitleBarClientArea
+{
+  OS_W32_TitleBarClientArea *next;
+  Rng2F32 rect;
+};
+
+typedef struct OS_W32_Window OS_W32_Window;
+struct OS_W32_Window
+{
+  OS_W32_Window *next;
+  OS_W32_Window *prev;
+  HWND hwnd;
+  HDC hdc;
+  WINDOWPLACEMENT last_window_placement;
+  F32 dpi;
+  B32 first_paint_done;
+  B32 maximized;
+  B32 custom_border;
+  F32 custom_border_title_thickness;
+  F32 custom_border_edge_thickness;
+  B32 custom_border_composition_enabled;
+  Arena *paint_arena;
+  OS_W32_TitleBarClientArea *first_title_bar_client_area;
+  OS_W32_TitleBarClientArea *last_title_bar_client_area;
+};
+
+////////////////////////////////
+//~ rjf: Monitor Gathering Bundle
+
+typedef struct OS_W32_MonitorGatherNode OS_W32_MonitorGatherNode;
+struct OS_W32_MonitorGatherNode
+{
+  OS_W32_MonitorGatherNode *next;
+  OS_Monitor v;
+};
+
+typedef struct OS_W32_MonitorGatherBundle OS_W32_MonitorGatherBundle;
+struct OS_W32_MonitorGatherBundle
+{
+  Arena *arena;
+  OS_W32_MonitorGatherNode *first_monitor;
+  OS_W32_MonitorGatherNode *last_monitor;
+  U64 monitor_count;
+};
+
+////////////////////////////////
+//~ rjf: Global State
+
+typedef struct OS_W32_GfxState OS_W32_GfxState;
+struct OS_W32_GfxState
+{
+  Arena *arena;
+  U32 gfx_thread_tid;
+  HINSTANCE hInstance;
+  HCURSOR hCursor;
+  OS_GfxInfo gfx_info;
+  OS_W32_Window *first_window;
+  OS_W32_Window *last_window;
+  OS_W32_Window *free_window;
+  OS_Key key_from_vkey_table[256];
+};
+
+////////////////////////////////
+//~ rjf: Globals
+
+global OS_W32_GfxState *os_w32_gfx_state = 0;
+global OS_EventList os_w32_event_list = {0};
+global Arena *os_w32_event_arena = 0;
+global B32 os_w32_resizing = 0;
+global B32 os_w32_new_window_custom_border = 0;
+
+////////////////////////////////
+//~ rjf: Basic Helpers
+
+internal Rng2F32 os_w32_rng2f32_from_rect(RECT rect);
+
+////////////////////////////////
+//~ rjf: Windows
+
+internal OS_Window       os_w32_handle_from_window(OS_W32_Window *window);
+internal OS_W32_Window * os_w32_window_from_handle(OS_Window window);
+internal OS_W32_Window * os_w32_window_from_hwnd(HWND hwnd);
+internal HWND            os_w32_hwnd_from_window(OS_W32_Window *window);
+internal OS_W32_Window * os_w32_window_alloc(void);
+internal void            os_w32_window_release(OS_W32_Window *window);
+internal OS_Event *      os_w32_push_event(OS_EventKind kind, OS_W32_Window *window);
+internal OS_Key          os_w32_os_key_from_vkey(WPARAM vkey);
+internal WPARAM          os_w32_vkey_from_os_key(OS_Key key);
+internal LRESULT         os_w32_wnd_proc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
+
+////////////////////////////////
+//~ rjf: Monitors
+
+internal BOOL os_w32_monitor_gather_enum_proc(HMONITOR monitor, HDC hdc, LPRECT rect, LPARAM bundle_ptr);
+
+#endif // WIN32_WINDOW_MANAGER_H