ShowWindow() FAIL (return FALSE)

EDN Admin · Nov 23, 2006

I dont understand why ShowWindow() return a false value. Im new of Win32, some1 can help me? My code bottom (main.cpp) 
#include "Game.h" 
INT WINAPI WinMain( HINSTANCE hInst, HINSTANCE, LPSTR, INT nCmdShow )
{ 
Game game; 
HRESULT hResult; 
hResult = game.InitWindow(hInst,nCmdShow,TEXT("Tutorial 01: Init Window"),800,600,false); 
if ( FAILED(hResult) ) { 
DXTrace(__FILE__,__LINE__,hResult,DXGetErrorDescription(hResult),TRUE); 
return 1; 
} 
if ( FAILED(game.Run()) )
return 1; 
return 0;
} 

Application (Game.cpp) 
#include "Game.h" 
LRESULT CALLBACK MsgProc( HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam )
{ 
PAINTSTRUCT ps; 
HDC hdc; 
switch (message)
{ 
case WM_PAINT: 
hdc = BeginPaint(hWnd, &ps); 
EndPaint(hWnd, &ps); 
break; 
case WM_DESTROY: 
PostQuitMessage(0); 
break; 
default: 
return DefWindowProc(hWnd, message, wParam, lParam); 
} 
return 0;
} 
HRESULT Game::InitWindow(HINSTANCE hInst, INT nCmdShow, LPCTSTR title, int nWidth, int nHeight, BOOL full)
{ 
 
wc.cbSize = sizeof(WNDCLASSEX); // Window Class Size 
wc.style = CS_HREDRAW | CS_VREDRAW; // Redraw On Move, And Own DC For Window 
wc.lpfnWndProc = (WNDPROC) MsgProc; // WndProc Handles Messages 
wc.cbClsExtra = 0L; // No Extra Window Data 
wc.cbWndExtra = 0L; // No Extra Window Data 
wc.hInstance = hInst; // Set The Instance 
wc.hCursor = LoadCursor(NULL, IDC_ARROW); // Load The Arrow Pointer 
wc.hbrBackground = (HBRUSH)(COLOR_WINDOW); // Background Color 
wc.lpszClassName = TEXT("D3D Tutorial"); // Set The Class Name 
wc.hIcon = NULL; // Load The Default Icon 
wc.hIconSm = NULL; // No IconSm 
wc.lpszMenuName = NULL; // We Dont Want A Menu 

 
if ( !RegisterClassEx( &wc ) ) 
return E_FAIL; 
 
wWidth = nWidth; 
wHeight = nHeight; 
 
dd = GetPrimaryDevice(); 
dm.dmSize = sizeof(DEVMODE);

if ( !EnumDisplaySettings(dd.DeviceName, ENUM_CURRENT_SETTINGS, &dm) ) 
return E_FAIL;
// Create window 
if ( !(hWnd = CreateWindow( 
wc.lpszClassName, 
title, 
WS_OVERLAPPEDWINDOW, 
((dm.dmPelsWidth-wWidth)/2), ((dm.dmPelsHeight-wHeight)/2), 
wWidth, wHeight, 
NULL, NULL, wc.hInstance, NULL )) ) 
return E_FAIL; 
// Show and update the window 
if ( !ShowWindow( hWnd, nCmdShow ) ) 
return E_FAIL; 

UpdateWindow( hWnd ); 
return S_OK;
} 

HRESULT Game::Run(void)
{ 
ZeroMemory( &msg, sizeof(msg) ); 
while ( msg.message!=WM_QUIT ) { 

if ( PeekMessage( &msg, NULL, 0U, 0U, PM_REMOVE ) ) { 
TranslateMessage( &msg ); 
DispatchMessage( &msg ); 
} 
} 
UnregisterClass( wc.lpszClassName, wc.hInstance ); 
return S_OK;
}


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ShowWindow() FAIL (return FALSE)

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