Simplify drawing to screen example

.gitignore

@@ -5,6 +5,7 @@
 *.4c
 *.bin
 *.rdbg
+start.bat
 
 *.c
 backup*

core_main.cpp

@@ -9,6 +9,7 @@ In the future
 
 - [ ] Cleanup
   - [ ] Remove tuple stuff or cleanup, in the future might replace it with a better implementation
+  - [ ] Add ability to do i: int = 0 inside for loops
 
 - [ ] Conditional compilation
 - [ ] Expand macros

examples/drawing_to_screen_using_windows_api.core

@@ -1,36 +1,41 @@
 #import "Base.core"
 #import "Arena.core"
-#import "Windows.core"
 #import "KERNEL32.core"
 #import "GDI32.core"
 #import "USER32.core"
-#import "WINMM.core"
 
-Vec2I :: struct;; x: S64; y: S64
+WinMain :: (hInstance: HINSTANCE, hPrevInstance: HINSTANCE, lpCmdLine: LPSTR, nShowCmd: int): int
+  screen_size_x: int = 1280
+  screen_size_y: int = 720
 
-AppIsRunning := true
-Windows_Bitmap :: struct
-  size: Vec2I
-  data: *U32
-  hdc: HDC
-  dib: HBITMAP
+  arena: Arena
+  window_name := StringToString16(&arena, "Have a wonderful day!")
+  w := WNDCLASSW{
+    lpfnWndProc   = WindowProc,
+    hInstance     = hInstance,
+    lpszClassName = window_name.str,
+  }
+  Assert(RegisterClassW(&w) != 0)
 
-Bitmap :: struct
-  size: Vec2I
-  data: *U32
-
-CreateBitmap :: (size: Vec2I, bottom_up: Bool = true): Windows_Bitmap
-  result: Windows_Bitmap = {size = size}
-  if bottom_up == false
-    result.size.y = -result.size.y
+  window := CreateWindowExW(
+    dwExStyle = 0, hWndParent = 0, hMenu = 0, lpParam = 0,
+    X = CW_USEDEFAULT, Y = CW_USEDEFAULT, nWidth = screen_size_x, nHeight = screen_size_y,
+    lpClassName = window_name.str,
+    lpWindowName = window_name.str,
+    dwStyle = WS_OVERLAPPEDWINDOW,
+    hInstance = hInstance
+  )
+  Assert(window != 0)
+  ShowWindow(window, nShowCmd)
+  window_dc := GetDC(window)
 
   header_size: U32 = SizeOf(BITMAPINFOHEADER)
   Assert(header_size == 40)
   bminfo := BITMAPINFO{
     BITMAPINFOHEADER{
       biSize          = header_size,
-      biWidth         = size.x->LONG,
-      biHeight        = size.y->LONG,
+      biWidth         = screen_size_x->LONG,
+      biHeight        = screen_size_y->LONG,
       biPlanes        = 1,
       biBitCount      = 32,
       biCompression   = BI_RGB,
@@ -39,46 +44,9 @@ CreateBitmap :: (size: Vec2I, bottom_up: Bool = true): Windows_Bitmap
     }
   }
 
-  hdc := GetDC(0)
-  result.dib = CreateDIBSection(hdc, &bminfo, DIB_RGB_COLORS, (&result.data)->**void, 0, 0)
-  result.hdc = CreateCompatibleDC(hdc)
-  return result
-
-WindowProc :: (hwnd: HWND, msg: UINT, wparam: WPARAM, lparam: LPARAM): LRESULT
-  if msg == WM_DESTROY
-    PostQuitMessage(0)
-    AppIsRunning = false
-    return 0
-  else;; return DefWindowProcW(hwnd, msg, wparam, lparam)
-
-WinMain :: (hInstance: HINSTANCE, hPrevInstance: HINSTANCE, lpCmdLine: LPSTR, nShowCmd: int): int
-  if good_scheduling := false, timeBeginPeriod(1) == TIMERR_NOERROR
-    good_scheduling = true
-
-  arena: Arena
-
-  window_name := StringToString16(&arena, "Have a wonderful day! 你好世界 ")
-  w := WNDCLASSW{
-    lpfnWndProc   = WindowProc,
-    hInstance     = hInstance,
-    lpszClassName = window_name.str,
-  }
-  Assert(RegisterClassW(&w) != 0)
-
-  screen_size: Vec2I = {1280, 720}
-  window := CreateWindowExW(
-    dwExStyle = 0, hWndParent = 0, hMenu = 0, lpParam = 0,
-    X = CW_USEDEFAULT, Y = CW_USEDEFAULT, nWidth = screen_size.x->int, nHeight = screen_size.y->int,
-    lpClassName = window_name.str,
-    lpWindowName = window_name.str,
-    dwStyle = WS_OVERLAPPEDWINDOW,
-    hInstance = hInstance
-  )
-  Assert(window != 0)
-  ShowWindow(window, nShowCmd)
-
-  window_dc := GetDC(window)
-  bitmap := CreateBitmap(screen_size)
+  pixels: *U32
+  bitmap_dib := CreateDIBSection(window_dc, &bminfo, DIB_RGB_COLORS, (&pixels)->**void, 0, 0)
+  bitmap_hdc := CreateCompatibleDC(window_dc)
 
   for AppIsRunning
     msg: MSG
@@ -86,14 +54,23 @@ WinMain :: (hInstance: HINSTANCE, hPrevInstance: HINSTANCE, lpCmdLine: LPSTR, nS
       TranslateMessage(&msg)
       DispatchMessageW(&msg)
 
-    for y := 0, y < bitmap.size.y, y+=1
-      for x := 0, x < bitmap.size.x, x+=1
-        bitmap.data[x + y*bitmap.size.x] = 0xFFFF0000
+    for y := 0->int, y < screen_size_y, y+=1
+      for x := 0->int, x < screen_size_x, x+=1
+        pixels[x + y*screen_size_x] = 0xFFFF0000
 
-    SelectObject(bitmap.hdc, bitmap.dib)
-    BitBlt(window_dc, 0, 0, (bitmap.size.x)->int, (bitmap.size.y)->int, bitmap.hdc, 0, 0, SRCCOPY)
+    SelectObject(bitmap_hdc, bitmap_dib)
+    BitBlt(window_dc, 0, 0, screen_size_x, screen_size_y, bitmap_hdc, 0, 0, SRCCOPY)
     Sleep(100)
 
     if CStringCompare(lpCmdLine, "testing")
       return 0
   return 0
+
+
+AppIsRunning := true
+WindowProc :: (hwnd: HWND, msg: UINT, wparam: WPARAM, lparam: LPARAM): LRESULT
+  if msg == WM_DESTROY
+    PostQuitMessage(0)
+    AppIsRunning = false
+    return 0
+  else;; return DefWindowProcW(hwnd, msg, wparam, lparam)

modules/Base.core

@@ -18,6 +18,11 @@ AlignUp :: (size: SizeU, align: SizeU): SizeU
   result := size + GetAlignOffset(size, align)
   return result
 
+ZeroMemory :: (p: *void, size: SizeU)
+  pcast := p->*U8
+  for i := 0->SizeU, i < size, i++
+    pcast[i] = 0
+
 //
 // Unicode
 //

modules/GDI32.core

@@ -36,4 +36,6 @@ WHITENESS :: 0x00FF0062 /* dest = WHITE                    */
 CreateDIBSection   :: #foreign (hdc: HDC, pbmi: *BITMAPINFO, usage: UINT, ppvBits: **VOID, hSection: HANDLE, offset: DWORD): HBITMAP
 CreateCompatibleDC :: #foreign (hdc: HDC): HDC
 SelectObject       :: #foreign (hdc: HDC, h: HGDIOBJ): HGDIOBJ
-BitBlt             :: #foreign (hdc: HDC, x: int, y: int, cx: int, cy: int, hdcSrc: HDC, x1: int, y1: int, ro: DWORD): BOOL
+BitBlt             :: #foreign (hdc: HDC, x: int, y: int, cx: int, cy: int, hdcSrc: HDC, x1: int, y1: int, ro: DWORD): BOOL
+DeleteDC           :: #foreign (hdc: HDC): BOOL
+DeleteObject       :: #foreign (ho : HGDIOBJ): BOOL