i think it works

code/shell/shell.c

@@ -0,0 +1,47 @@
+#include <stdint.h>
+#include <stddef.h>
+
+void BitBlt(int x, int y, int w, int h, const uint32_t* pixels);
+void* HeapAlloc(void* heap, unsigned long flags, size_t size);
+int HeapFree(void* heap, unsigned long flags, void* mem);
+_Noreturn void ExitProcess(unsigned int code);
+_Noreturn void ExitThread(unsigned long code);
+void OutputDebugStringA(const char* s);
+
+int main() {
+    OutputDebugStringA("Hello from the shell!\n");
+    int width = 300;
+    int height = 300;
+
+    // Allocate space for uint32_t (4 bytes per pixel)
+    uint32_t* image = (uint32_t *)HeapAlloc(NULL, 0, width * height * sizeof(uint32_t));
+    
+    int tileSize = 8;
+
+    for (int y = 0; y < height; y++) {
+        for (int x = 0; x < width; x++) {
+            uint32_t color1 = 0xFFFFFFFF; // White
+            uint32_t color2 = 0xFF000000; // Black
+
+            int tileX = x / tileSize;
+            int tileY = y / tileSize;
+
+            if ((tileX + tileY) % 2 == 0) {
+                image[y * width + x] = color1;
+            } else {
+                image[y * width + x] = color2;
+            }
+        }
+    }
+
+    // Pass the 32-bit buffer directly to BitBlt
+    BitBlt(600, 400, width, height, image);
+
+    for (size_t i = 0; i < 1000000000; i++) {
+        // burn!
+    }
+
+    OutputDebugStringA("Goodbye from the shell!\n");
+
+    ExitProcess(0);
+}