WIN32 - C, Window

[BugMenOT2]

Hallo,

Heb in WIN32 een window gemaakt.
Deze comileert met dev-c 4 compleet zonder fout maar als ik het programma wil uitvoeren doet hij gewoon niets.

Kan iemand even naar de code kijken en misschien helpen de fout te vinden ?

groetjes,

Benny

#include <windows.h>

LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, char * szCmdLine, int iCmdShow)
{
char szAppName[] = "My window";
HWND               hwnd;
MSG                msg;
WNDCLASS          wndclass;

wndclass.lpfnWndProc       = WndProc;
wndclass.lpszClassName     = szAppName;
wndclass.style             = CS_HREDRAW | CS_VREDRAW;
wndclass.hInstance         = hInstance;
wndclass.hIcon             = LoadIcon(NULL, IDI_APPLICATION);
wndclass.hCursor           = LoadCursor(NULL, IDC_ARROW);
wndclass.hbrBackground     = (HBRUSH) (COLOR_WINDOW+1);
wndclass.lpszMenuName      = NULL;
wndclass.cbClsExtra        = 0;
wndclass.cbWndExtra        = 0;

//register class
if (!RegisterClass(&wndclass))
{
 MessageBox(NULL, "Window registration failed!", szAppName, MB_OK);
 return 0;
}

//create window
hwnd = CreateWindow(szAppName,
                    szAppName,
                    WS_OVERLAPPEDWINDOW,
                    CW_USEDEFAULT,
                    CW_USEDEFAULT,
                    CW_USEDEFAULT,
                    CW_USEDEFAULT,
                    NULL,
                    NULL,
                    hInstance,
                    NULL);

ShowWindow(hwnd, iCmdShow);
UpdateWindow(hwnd);


//messageloop
while(GetMessage(&msg, NULL, 0, 0))
{
 TranslateMessage(&msg);
 DispatchMessage(&msg);
}
 return msg.wParam;
 }

 //window procedure
LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
 HDC                               hdc;
 PAINTSTRUCT                       lpps;
 RECT                              lprect;

 switch(message)
 {
  case WM_PAINT:
                                   hdc = BeginPaint(hwnd, &lpps);

                                   GetClientRect(hwnd, &lprect);
                                   DrawText(hdc, "Hello World!", -1, &lprect, DT_CENTER | DT_VCENTER | DT_SINGLELINE);

                                   EndPaint(hwnd, &lpps);
                                   return 0;


  case WM_DESTROY:
                                  PostQuitMessage(0);
                                  return 0;
 }
  return DefWindowProc(hwnd, message, lParam, wParam);
}