#define STRICT
#include <windows.h>

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

const char szAppName[] = "FunWarSuche v0.1";

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
                                        PSTR szCmdLine, int iCmdShow)
{
                                        HWND window;
                                        HWND button;
                                        MSG msg;
                                        WNDCLASS wc;
                                        wc.style = CS_HREDRAW | CS_VREDRAW;
                                        wc.lpfnWndProc = WndProc;
                                        wc.cbClsExtra  = 0;
                                        wc.cbWndExtra  = 0;
                                        wc.hInstance   = hInstance;
                                        wc.hCursor     = LoadCursor(NULL,IDC_ARROW);
                                        wc.hIcon       = LoadIcon(NULL,IDI_APPLICATION);
                                        wc.hbrBackground = (HBRUSH)(COLOR_WINDOW+0);
                                        wc.lpszClassName = szAppName;
                                        wc.lpszMenuName  = NULL;
                                        RegisterClass(&wc);

window = CreateWindow(szAppName, "Testprogramm", WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL);
button = CreateWindow("BUTTON", "Test", 0, 0, 0, 100, 50, window, NULL, hInstance, NULL);                  
ShowWindow(window, iCmdShow);
UpdateWindow(window);
WNDPROC oldProc = (WNDPROC)SetClassLong(button, GCL_WNDPROC, (LONG)WndProc);
while(GetMessage(&msg, NULL, 0, 0))
{
                       TranslateMessage(&msg);
                       DispatchMessage(&msg);
}
 return msg.wParam;
}
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
   HDC hdc;
   PAINTSTRUCT ps;
            switch (message)
            {
                  case WM_DESTROY:
                       {
                                  PostQuitMessage(0);
                                  return 0;
                       }
             }

                  return DefWindowProc(hWnd, message, wParam, lParam);
}

Sonst ist der Button zwar vorhanden, wird aber nicht angezeigt.

Greetz :xmas1:

Greetz :xmas2:

Greetz

Greetz

Greetz :xmas1: