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#define WINDOWS_LEAN_AND_MEAN
#include <windows.h>
#include <string.h>
#define eq(s1,s2) (strcmp(s1,s2)==0)
#define WBUFF 2048
#define MAX_SHOW 100
module "winapi" {
class window {
HWND hwnd;
constructor (HWND h) {
this->hwnd = h;
}
static lua_State *sL;
static BOOL enum_callback(HWND hwnd,LPARAM data) {
int ref = (int)data;
lua_rawgeti(sL,LUA_REGISTRYINDEX,ref);
push_new_window(sL,hwnd);
lua_call(sL,1,0);
return TRUE;
}
def handle() {
lua_pushinteger(L,(int)this->hwnd);
return 1;
}
static char buff[WBUFF];
def get_text() {
GetWindowText(this->hwnd,buff,sizeof(buff));
lua_pushstring(L,buff);
return 1;
}
def show(Int flags = SW_SHOW) {
ShowWindow(this->hwnd,flags);
return 0;
}
def get_position() {
RECT rect;
GetWindowRect(this->hwnd,&rect);
lua_pushinteger(L,rect.left);
lua_pushinteger(L,rect.top);
return 2;
}
def get_bounds() {
RECT rect;
GetWindowRect(this->hwnd,&rect);
lua_pushinteger(L,rect.right - rect.left);
lua_pushinteger(L,rect.bottom - rect.top);
return 2;
}
def is_visible() {
lua_pushboolean(L,IsWindowVisible(this->hwnd));
return 1;
}
def destroy () {
DestroyWindow(this->hwnd);
return 0;
}
def resize(Int x0, Int y0, Int w, Int h) {
MoveWindow(this->hwnd,x0,y0,w,h,TRUE);
return 0;
}
def send_message(Int msg, Int wparam, Int lparam) {
SendMessage(this->hwnd,msg,wparam,lparam);
}
def enum_children(Value callback) {
int ref;
sL = L;
lua_pushvalue(L,callback);
ref = luaL_ref(L,LUA_REGISTRYINDEX);
EnumChildWindows(this->hwnd,&enum_callback,ref);
luaL_unref(L,LUA_REGISTRYINDEX,ref);
return 0;
}
def get_parent() {
push_new_window(L,GetParent(this->hwnd));
return 1;
}
def get_module_filename() {
int sz = GetWindowModuleFileName(this->hwnd,buff,sizeof(buff));
buff[sz] = '\0';
lua_pushstring(L,buff);
return 1;
}
def __tostring() {
GetWindowText(this->hwnd,buff,sizeof(buff));
if (strlen(buff) > MAX_SHOW) {
strcpy(buff+MAX_SHOW,"...");
}
lua_pushstring(L,buff);
return 1;
}
def __eq(window other) {
lua_pushboolean(L,this->hwnd == other->hwnd);
return 1;
}
}
def find_window(Str cname, Str wname) {
HWND hwnd;
if (eq(cname,"")) {
cname = NULL;
}
hwnd = FindWindow(cname,wname);
push_new_window(L,hwnd);
return 1;
}
def active_window() {
push_new_window(L, GetActiveWindow());
return 1;
}
def desktop_window() {
push_new_window(L, GetDesktopWindow());
return 1;
}
def enum_windows(Value callback) {
int ref;
sL = L;
lua_pushvalue(L,callback);
ref = luaL_ref(L,LUA_REGISTRYINDEX);
EnumWindows(&enum_callback,ref);
luaL_unref(L,LUA_REGISTRYINDEX,ref);
return 0;
}
def tile_windows(window parent, Boolean horiz, Value kids, Value bounds) {
RECT rt;
HWND *kids_arr;
int i,n_kids;
LPRECT lpRect = NULL;
if (! lua_isnoneornil(L,bounds)) {
lua_pushvalue(L,bounds);
Int_get(rt.left,"left");
Int_get(rt.top,"top");
Int_get(rt.right,"right");
Int_get(rt.bottom,"bottom");
lua_pop(L,1);
}
n_kids = lua_objlen(L,kids);
kids_arr = (HWND *)malloc(sizeof(HWND)*n_kids);
for (i = 0; i < n_kids; ++i) {
window *w;
lua_rawgeti(L,kids,i+1);
w = window_arg(L,-1);
kids_arr[i] = w->hwnd;
}
TileWindows(parent->hwnd,horiz ? MDITILE_HORIZONTAL : MDITILE_VERTICAL, lpRect, n_kids, kids_arr);
free(kids_arr);
return 0;
}
def shell_exec(StrNil verb, Str file, StrNil parms, StrNil dir, Int show=SW_SHOWNORMAL) {
int res = (int)ShellExecute(NULL,verb,file,parms,dir,show);
if (res > 32) {
lua_pushboolean(L,1);
return 1;
} else {
const char *msg;
switch(res) {
#define check_err(NAME) case NAME: msg = #NAME; break;
check_err(ERROR_FILE_NOT_FOUND);
check_err(ERROR_PATH_NOT_FOUND);
check_err(ERROR_BAD_FORMAT);
check_err(SE_ERR_ACCESSDENIED);
check_err(SE_ERR_ASSOCINCOMPLETE);
check_err(SE_ERR_DLLNOTFOUND);
check_err(SE_ERR_NOASSOC);
check_err(SE_ERR_OOM);
check_err(SE_ERR_SHARE);
default: msg = "unknown error, probably DDE";
#undef check_err
}
lua_pushnil(L);
lua_pushstring(L,msg);
return 2;
}
}
constants {
SW_HIDE,
SW_MAXIMIZE,
SW_MINIMIZE,
SW_SHOWNORMAL
}
}
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