Wieso funktioniert das mit dem Thread nicht?

#include <windows.h>
#include <stdio.h>

DWORD WINAPI MessageThread(LPVOID);
LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);

MSG mMsg;
HWND hHandle;
WNDCLASS wWndclass;

void main(void)
{
	wWndclass.style         = CS_HREDRAW|CS_VREDRAW;
	wWndclass.lpfnWndPro    = WndProc;
	wWndclass.cbClsExtra    = 0;
	wWndclass.cbWndExtra    = 0;
	wWndclass.hInstance     = 0;
	wWndclass.hCursor       = LoadCursor(NULL,IDC_ARROW);
	wWndclass.hIcon         = LoadIcon(NULL,IDI_APPLICATION);
	wWndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
	wWndclass.lpszClassName = TEXT("Fensterklasse");
	wWndclass.lpszMenuName  = NULL;
	RegisterClass(&wWndclass);

	hHandle=CreateWindow(TEXT("Fensterklasse"),
				         TEXT("Fenstertitel"),
				         WS_OVERLAPPEDWINDOW,
				         0,
				         0,
				         200,
				         200,
				         NULL,
				         NULL,
				         0,
				         0
                         );

	ShowWindow(hHandle,SW_SHOW);
	UpdateWindow(hHandle);

	CreateThread(NULL,0,MessageThread,(LPVOID)0,0,NULL);

	printf("Druecken Sie die Enter-Taste um das Programm zu beenden!");
	getchar();
}

DWORD WINAPI MessageThread(LPVOID data)
{
	while(GetMessage(&mMsg,NULL,0,0))
	{
		Sleep(25);
		TranslateMessage(&mMsg);
		DispatchMessage(&mMsg);
	}

	return (0);
}

LRESULT CALLBACK WndProc(HWND hWnd,UINT message,WPARAM wParam,LPARAM lParam)
{
	switch(message)
	{
		case WM_DESTROY:
		{
			PostQuitMessage(0);
			return 0;
		}
	}

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

wWndclass.lpfnWndProc = WndProc;

Startet den Thread ohne Parameter....

DWORD WINAPI MessageThread(LPVOID data)

Erwartet ein Parameter

C++ sollte man können wenn man es verwendet -.-

Das Problem ist das diese Schlaufe in dem Thread irgendwie nicht funktioniert:

while(GetMessage(&mMsg,NULL,0,0))
{
     Sleep(25);
     TranslateMessage(&mMsg);
     DispatchMessage(&mMsg);
}

#include <windows.h> 
#include <stdio.h> 

DWORD WINAPI MessageThread(LPVOID); 
LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);

MSG mMsg;
HWND hHandle; 
WNDCLASS wWndclass;

void main(void) 
{ 
    wWndclass.style         = CS_HREDRAW|CS_VREDRAW; 
    wWndclass.lpfnWndProc   = WndProc; 
    wWndclass.cbClsExtra    = 0; 
    wWndclass.cbWndExtra    = 0; 
    wWndclass.hInstance     = 0; 
    wWndclass.hCursor       = LoadCursor(NULL,IDC_ARROW); 
    wWndclass.hIcon         = LoadIcon(NULL,IDI_APPLICATION); 
    wWndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH); 
    wWndclass.lpszClassName = TEXT("Fensterklasse"); 
    wWndclass.lpszMenuName  = NULL; 
    RegisterClass(&wWndclass); 

    hHandle=CreateWindow(TEXT("Fensterklasse"), 
                         TEXT("Fenstertitel"), 
                         WS_OVERLAPPEDWINDOW, 
                         0, 
                         0, 
                         200, 
                         200, 
                         NULL, 
                         NULL, 
                         0, 
                         0 
                         ); 

    ShowWindow(hHandle,SW_SHOW); 
    UpdateWindow(hHandle);

    CreateThread(NULL,0,MessageThread,(LPVOID)&mMsg,0,NULL); 

    printf("Druecken Sie die Enter-Taste um das Programm zu beenden!"); 
    getchar(); 
}

DWORD WINAPI MessageThread(LPVOID data) 
{
	while(!GetMessage(((MSG *)data),NULL,0,0))
	{
		Sleep(25);
		TranslateMessage(((MSG *)data));
		DispatchMessage(((MSG *)data));
	}
	return (0);
}

LRESULT CALLBACK WndProc(HWND hWnd,UINT message,WPARAM wParam,LPARAM lParam) 
{ 
    switch(message) 
    { 
        case WM_DESTROY: 
        { 
            PostQuitMessage(0); 
            return 0; 
        } 
    } 

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