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add bindings necessary for creating windows and opengl contexts #6

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4e15d24
add functions necessary for window creation
sonicjason255 Sep 2, 2025
2404658
added bindings necessary for creating an opengl context
sonicjason255 Sep 2, 2025
c46f477
change fingerprint because I didn't know I was supposed to do that, w…
sonicjason255 Sep 2, 2025
3e98a80
Fixup callconv decl
hazeycode Sep 14, 2025
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2 changes: 1 addition & 1 deletion build.zig.zon
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
.{
.name = .zwindows,
.fingerprint = 0x263908d4bb75c6c4,
.fingerprint = 0x263908d417b0d996,
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This should not be changed

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I didn't want to put this in the pull request, but I couldn't figure out how to do that, I mainly did this because of reading somewhere that this was necessary for forks of a repository. This is purely for the sake of my own fork existing without conflicts. Sorry about that.

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@hazeycode hazeycode Sep 14, 2025 •
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You don't need to change this. For forks created for the purpose of authoring pull requests, it's not worth changing. It should be changed in the case of a proper fork that you want to differentiate from the original repo, in which case you can also keep an upstream-contrib branch with the commit that changes it deleted.

.version = "0.2.0-dev",
.minimum_zig_version = "0.14.0",
.paths = .{
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135 changes: 135 additions & 0 deletions src/bindings/windows.zig
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Expand Up @@ -47,6 +47,7 @@ const HWND = std.os.windows.HWND;
const HDC = std.os.windows.HDC;
const HGLRC = std.os.windows.HGLRC;
const FARPROC = std.os.windows.FARPROC;
const PROC = std.os.windows.PROC;
const INT = std.os.windows.INT;
const SIZE_T = std.os.windows.SIZE_T;
const UINT = std.os.windows.UINT;
Expand Down Expand Up @@ -139,6 +140,10 @@ pub const MINMAXINFO = extern struct {
ptMaxTrackSize: POINT,
};

pub extern "user32" fn GetDC(hWnd: HWND) callconv(WINAPI) HDC;

pub extern "user32" fn ReleaseDC(hWnd: HWND, hdc: HDC) callconv(WINAPI) c_int;

pub extern "user32" fn SetProcessDPIAware() callconv(WINAPI) BOOL;

pub extern "user32" fn GetClientRect(HWND, *RECT) callconv(WINAPI) BOOL;
Expand Down Expand Up @@ -203,6 +208,23 @@ pub extern "user32" fn CreateWindowExA(
lpParam: ?LPVOID,
) callconv(WINAPI) ?HWND;

pub extern "user32" fn ShowWindow(
hwnd: HWND,
nCmdShow: i32,
) callconv(WINAPI) bool;

pub extern "user32" fn IsWindow(hwnd: ?HWND) callconv(WINAPI) bool;

pub extern "user32" fn SetWindowPos(
hWnd: HWND,
hWndInsertAfter: ?HWND,
X: i32,
Y: i32,
cx: i32,
cY: i32,
uFlags: UINT,
) callconv(WINAPI) bool;

pub extern "user32" fn DestroyWindow(hWnd: HWND) BOOL;

pub extern "user32" fn PostQuitMessage(nExitCode: i32) callconv(WINAPI) void;
Expand Down Expand Up @@ -267,15 +289,33 @@ pub extern "shell32" fn SHGetKnownFolderPath(

pub const WS_BORDER = 0x00800000;
pub const WS_OVERLAPPED = 0x00000000;
pub const WS_CHILD = 0x40000000;
pub const WS_CHILDWINDOW = WS_CHILD;
pub const WS_CLIPCHILDREN = 0x02000000;
pub const WS_CLIPSIBLINGS = 0x04000000;
pub const WS_DISABLED = 0x08000000;
pub const WS_GROUP = 0x00020000;
pub const WS_SYSMENU = 0x00080000;
pub const WS_DLGFRAME = 0x00400000;
pub const WS_HSCROLL = 0x00100000;
pub const WS_ICONIC = 0x20000000;
pub const WS_CAPTION = WS_BORDER | WS_DLGFRAME;
pub const WS_MINIMIZE = 0x20000000;
pub const WS_MINIMIZEBOX = 0x00020000;
pub const WS_MAXIMIZE = 0x01000000;
pub const WS_MAXIMIZEBOX = 0x00010000;
pub const WS_THICKFRAME = 0x00040000;
pub const WS_OVERLAPPEDWINDOW = WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_THICKFRAME |
WS_MINIMIZEBOX | WS_MAXIMIZEBOX;
pub const WS_POPUP = 0x80000000;
pub const WS_POPUPWINDOW = WS_POPUP | WS_BORDER | WS_SYSMENU;
pub const WS_SIZEBOX = 0x00040000;
pub const WS_TABSTOP = 0x00010000;
pub const WS_TILED = 0x00000000;
pub const WS_TILEDWINDOW = WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_THICKFRAME |
WS_MINIMIZEBOX | WS_MAXIMIZEBOX;
pub const WS_VISIBLE = 0x10000000;
pub const WS_VSCROLL = 0x00200000;

pub const WM_MOUSEMOVE = 0x0200;
pub const WM_LBUTTONDOWN = 0x0201;
Expand Down Expand Up @@ -373,6 +413,19 @@ pub const WNDCLASSEXA = extern struct {
hIconSm: ?HICON,
};

pub const CS_BYTEALIGNCLIENT: comptime_int = 0x1000;
pub const CS_BYTEALIGNWINDOW: comptime_int = 0x2000;
pub const CS_CLASSDC: comptime_int = 0x0040;
pub const CS_DBLCLKS: comptime_int = 0x0008;
pub const CS_DROPSHADOW: comptime_int = 0x00020000;
pub const CS_GLOBALCLASS: comptime_int = 0x4000;
pub const CS_HREDRAW: comptime_int = 0x0002;
pub const CS_NOCLOSE: comptime_int = 0x0200;
pub const CS_OWNDC: comptime_int = 0x0020;
pub const CS_PARENTDC: comptime_int = 0x0080;
pub const CS_SAVEBITS: comptime_int = 0x0800;
pub const CS_VREDRAW: comptime_int = 0x0001;

pub const OSVERSIONINFOW = extern struct {
dwOSVersionInfoSize: ULONG,
dwMajorVersion: ULONG,
Expand Down Expand Up @@ -560,3 +613,85 @@ pub const IM_VK_KEYPAD_ENTER = VK_RETURN + 256;
pub const KF_EXTENDED = 0x0100;

pub const GUID_NULL = GUID.parse("{00000000-0000-0000-0000-000000000000}");

pub const PIXELFORMATDESCRIPTOR = extern struct {
nSize: WORD,
nVersion: WORD,
dwFlags: DWORD,
iPixelType: BYTE,
cColorBits: BYTE,
cRedBits: BYTE,
cRedShift: BYTE,
cGreenBits: BYTE,
cGreenShift: BYTE,
cBlueBits: BYTE,
cBlueShift: BYTE,
cAlphaBits: BYTE,
cAlphaShift: BYTE,
cAccumBits: BYTE,
cAccumRedBits: BYTE,
cAccumGreenBits: BYTE,
cAccumBlueBits: BYTE,
cAccumAlphaBits: BYTE,
cDepthBits: BYTE,
cStencilBits: BYTE,
cAuxBuffers: BYTE,
iLayerType: BYTE,
bReserved: BYTE,
dwLayerMask: DWORD,
dwVisibleMask: DWORD,
dwDamageMask: DWORD,
};

pub const PFD_DRAW_TO_WINDOW: comptime_int = 0x00000004;
pub const PFD_DRAW_TO_BITMAP: comptime_int = 0x00000008;
pub const PFD_SUPPORT_GDI: comptime_int = 0x00000010;
pub const PFD_SUPPORT_OPENGL: comptime_int = 0x00000020;
pub const PFD_GENERIC_ACCELERATED: comptime_int = 0x00001000;
pub const PFD_GENERIC_FORMAT: comptime_int = 0x00000040;
pub const PFD_NEED_PALETTE: comptime_int = 0x00000080;
pub const PFD_NEED_SYSTEM_PALETTE: comptime_int = 0x00000100;
pub const PFD_DOUBLEBUFFER: comptime_int = 0x00000002;
pub const PFD_STEREO: comptime_int = 0x00000001;
pub const PFD_SWAP_LAYER_BUFFERS: comptime_int = 0x00000800;

pub const PFD_DEPTH_DONTCARE: comptime_int = 0x20000000;
pub const PFD_DOUBLEBUFFER_DONTCARE: comptime_int = 0x40000000;
pub const PFD_STEREO_DONTCARE: comptime_int = 0x80000000;

pub const PFD_SWAP_COPY: comptime_int = 0x00000400;
pub const PFD_SWAP_EXCHANGE: comptime_int = 0x00000200;

pub const PFD_TYPE_RGBA: comptime_int = 0;
pub const PFD_TYPE_COLORINDEX: comptime_int = 1;

pub extern "Gdi32" fn DescribePixelFormat(
hdc: HDC,
iPixelFormat: c_int,
nBytes: UINT,
ppfd: *const PIXELFORMATDESCRIPTOR,
) callconv(WINAPI) c_int;

pub extern "Gdi32" fn ChoosePixelFormat(
hdc: HDC,
ppfd: *const PIXELFORMATDESCRIPTOR,
) callconv(WINAPI) c_int;

pub extern "Gdi32" fn SetPixelFormat(
hdc: HDC,
format: c_int,
ppfd: *const PIXELFORMATDESCRIPTOR,
) callconv(WINAPI) bool;

pub extern "Gdi32" fn SwapBuffers(hdc: HDC) callconv(WINAPI) BOOL;

pub extern "Opengl32" fn wglCreateContext(hdc: HDC) callconv(WINAPI) HGLRC;

pub extern "Opengl32" fn wglDeleteContext(unnamedParam1: HGLRC) callconv(WINAPI) BOOL;

pub extern "Opengl32" fn wglMakeCurrent(
hdc: HDC,
glContext: HGLRC,
) callconv(WINAPI) BOOL;

pub extern "Opengl32" fn wglGetProcAddress(unnamedParam1: LPCSTR) callconv(WINAPI) ?PROC;
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