From 917c881da874c36a0683ef6b075c5751048838ab Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20S=2E=20=C5=81ukasiewicz?= <marek@lukasiewicz.tech>
Date: Sun, 8 Feb 2026 13:20:56 +0100
Subject: [PATCH] Press a key using WIN32 API in Zig

---
 build.zig     | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
 build.zig.zon | 20 ++++++++++++++++++++
 mise.toml     |  3 +++
 src/main.zig  | 10 ++++++++++
 src/root.zig  | 20 ++++++++++++++++++++
 5 files changed, 103 insertions(+)
 create mode 100644 build.zig
 create mode 100644 build.zig.zon
 create mode 100644 mise.toml
 create mode 100644 src/main.zig
 create mode 100644 src/root.zig

diff --git a/build.zig b/build.zig
new file mode 100644
index 0000000..6e56aaf
--- /dev/null
+++ b/build.zig
@@ -0,0 +1,50 @@
+const std = @import("std");
+
+pub fn build(b: *std.Build) void {
+    const target = b.standardTargetOptions(.{});
+    const optimize = b.standardOptimizeOption(.{});
+
+    const win32_dep = b.dependency("zigwin32", .{});
+    const mod = b.addModule("win_telegraph", .{
+        .root_source_file = b.path("src/root.zig"),
+        .target = target,
+        .imports = &.{
+            .{ .name = "win32", .module = win32_dep.module("win32") },
+        },
+    });
+
+    const exe = b.addExecutable(.{
+        .name = "win_telegraph",
+        .root_module = b.createModule(.{
+            .root_source_file = b.path("src/main.zig"),
+            .target = target,
+            .optimize = optimize,
+            .imports = &.{
+                .{ .name = "win_telegraph", .module = mod },
+            },
+        }),
+    });
+    b.installArtifact(exe);
+
+    const run_step = b.step("run", "Run the app");
+    const run_cmd = b.addRunArtifact(exe);
+    run_step.dependOn(&run_cmd.step);
+    run_cmd.step.dependOn(b.getInstallStep());
+    if (b.args) |args| {
+        run_cmd.addArgs(args);
+    }
+
+    const mod_tests = b.addTest(.{
+        .root_module = mod,
+    });
+    const run_mod_tests = b.addRunArtifact(mod_tests);
+    const exe_tests = b.addTest(.{
+        .root_module = exe.root_module,
+    });
+
+    const run_exe_tests = b.addRunArtifact(exe_tests);
+
+    const test_step = b.step("test", "Run tests");
+    test_step.dependOn(&run_mod_tests.step);
+    test_step.dependOn(&run_exe_tests.step);
+}
diff --git a/build.zig.zon b/build.zig.zon
new file mode 100644
index 0000000..2c2a65f
--- /dev/null
+++ b/build.zig.zon
@@ -0,0 +1,20 @@
+.{
+    .name = .win_telegraph,
+    .version = "0.0.0",
+    .fingerprint = 0xd9b97c83665bc0f3, // Changing this has security and trust implications.
+    .minimum_zig_version = "0.15.2",
+    .dependencies = .{
+        .zigwin32 = .{
+            .url = "git+https://github.com/marlersoft/zigwin32.git#3be22a8d33d330662b1fbb5b68c9411bf0293e27",
+            .hash = "zigwin32-25.0.28-preview-AAAAAB6N5AP3iLHsHKzg7r_aiDyYWo92qLOAG2eBLWhE",
+        },
+    },
+    .paths = .{
+        "build.zig",
+        "build.zig.zon",
+        "paddle",
+        "src",
+        "LICENSE",
+        //"README.md",
+    },
+}
diff --git a/mise.toml b/mise.toml
new file mode 100644
index 0000000..0ac46dc
--- /dev/null
+++ b/mise.toml
@@ -0,0 +1,3 @@
+[tools]
+zig = "0.15.2"
+zls = "0.15.1"
diff --git a/src/main.zig b/src/main.zig
new file mode 100644
index 0000000..01c8085
--- /dev/null
+++ b/src/main.zig
@@ -0,0 +1,10 @@
+const std = @import("std");
+const win_telegraph = @import("win_telegraph");
+
+pub fn main() !void {
+    std.debug.print("Will press space in 3 seconds\n", .{});
+    std.Thread.sleep(3 * std.time.ns_per_s);
+
+    win_telegraph.setKey(.SPACE, true);
+    win_telegraph.setKey(.SPACE, false);
+}
diff --git a/src/root.zig b/src/root.zig
new file mode 100644
index 0000000..5728177
--- /dev/null
+++ b/src/root.zig
@@ -0,0 +1,20 @@
+const std = @import("std");
+const win32 = @import("win32").everything;
+
+pub const Key = win32.VIRTUAL_KEY;
+
+pub fn setKey(key: Key, pressed: bool) void {
+    var ip: win32.INPUT = .{
+        .type = .KEYBOARD,
+        .Anonymous = .{
+            .ki = .{
+                .wVk = key, // virtual-key code for the chosen key
+                .wScan = 0, // hardware scan code for key
+                .dwFlags = .{ .KEYUP = if (pressed) 0 else 1 },
+                .time = 0,
+                .dwExtraInfo = 0,
+            },
+        },
+    };
+    _ = win32.SendInput(1, @ptrCast(&ip), @sizeOf(win32.INPUT));
+}