FillRect won't draw anything - winapi

Question

I'm trying to create a simple window in Win32 and draw a rectangle in it, but for some reason FillRect isn't working for me. Here's my source:
#include <windows.h>
#include "resource.h"
RECT rect;
LRESULT CALLBACK WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
static PAINTSTRUCT ps;
static HDC hDC;
switch(msg)
{
case WM_PAINT:
hDC = BeginPaint(hWnd, &ps);
FillRect(hDC, &rect, (HBRUSH)(COLOR_WINDOW+1));
EndPaint(hWnd, &ps);
break;
case WM_CLOSE:
DestroyWindow(hWnd);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc(hWnd, msg, wParam, lParam);
}
return 0;
}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
WNDCLASSEX wc;
HWND hWnd;
MSG msg;
rect.left = 0;
rect.right = 0;
rect.top = 100;
rect.bottom = 100;
wc.cbSize = sizeof(WNDCLASSEX);
wc.style = 0;
wc.lpfnWndProc = WndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH)(COLOR_ACTIVEBORDER+1);
wc.lpszMenuName = MAKEINTRESOURCE(IDR_MAIN_MENU);
wc.lpszClassName = "Main";
wc.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
RegisterClassEx(&wc);
hWnd = CreateWindowEx(NULL, "Main", "Main", WS_SYSMENU | WS_MINIMIZEBOX, CW_USEDEFAULT, CW_USEDEFAULT, 240, 360, NULL, NULL, hInstance, NULL);
ShowWindow(hWnd, nCmdShow);
UpdateWindow(hWnd);
while(GetMessage(&msg, NULL, 0, 0) > 0)
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return msg.wParam;
}
Is there something I'm missing or doing wrong in my code? Thanks in advance

Answer 1

Your code is fine. The problem is that you have
rect.left = 0 and rect.right = 0 and the rect.top and rect.bottom are also the same. So your rect is 0 size.
Try this
rect.left = 0;
rect.right = 100;
rect.top = 0;
rect.bottom = 100;