获取HWND用API GetConsoleWindow，获取HINSTANCE使用GetModuleHandle(NULL)。
比如说:
#include <Windows.h>
#include <tchar.h>
#include <iostream>
#include <map>
using namespace std;
namespace dbsoft
{
class CSplashWindow
{
public:
CSplashWindow( HINSTANCE hInst, std::basic_string<TCHAR> strBmp ):m_hInstance(hInst),m_hWnd(NULL),m_hBitMap(NULL),m_hThread(NULL), \
m_strBmpFile( strBmp )
{
}
~CSplashWindow()
{
Stop();
}
inline bool Show()
{
TCHAR szClassName[MAX_PATH];
_stprintf_s( szClassName, _T("SplashScreenClass%d"), (int)this );
m_strClassName = szClassName;
WNDCLASS wc;
wc.style = 0;
wc.lpfnWndProc = (WNDPROC) SplashScreenWndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = m_hInstance;
wc.hIcon = LoadIcon((HINSTANCE) NULL, IDI_APPLICATION);
wc.hCursor = LoadCursor((HINSTANCE) NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
wc.lpszMenuName = NULL;
wc.lpszClassName = szClassName;
if(!RegisterClass(&wc))
{
return 0;
}
m_hBitMap = (HBITMAP) LoadImage( m_hInstance, m_strBmpFile.c_str(), IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE);
if( m_hBitMap == NULL )
{
return false;
}
m_hThread = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)SplashScreenWorkThread, this, 0, NULL);
return true;
}
inline void Stop()
{
if(m_hThread)
{
if(m_hWnd)
{
PostMessage(m_hWnd, WM_DESTROY, 0, 0);
}
WaitForSingleObject(m_hThread, INFINITE);
unRegisterWindow( this );
CloseHandle(m_hThread);
m_hThread = NULL;
m_hWnd = NULL;
}
}
inline HINSTANCE GetIns() const
{
return m_hInstance;
}
inline HBITMAP GetBitmap() const
{
return m_hBitMap;
}
inline HWND GetWnd() const
{
return m_hWnd;
}
inline void SetWnd( HWND hWnd )
{
m_hWnd = hWnd;
}
inline std::basic_string<TCHAR> GetClassName() const
{
return m_strClassName;
}
private:
HINSTANCE m_hInstance;
HWND m_hWnd;
HANDLE m_hThread;
std::basic_string<TCHAR> m_strBmpFile;
std::basic_string<TCHAR> m_strClassName;
HBITMAP m_hBitMap;
static inline std::map<HWND, CSplashWindow*>& StaticMapContainer()
{
static std::map<HWND,CSplashWindow*> container;
return container;
}
inline static void registerWindow( CSplashWindow* hWnd )
{
if( hWnd != NULL )
{
StaticMapContainer()[ hWnd->GetWnd() ] = hWnd;
}
}
inline static void unRegisterWindow( CSplashWindow* hWnd )
{
if( hWnd != NULL )
{
StaticMapContainer().erase( hWnd->GetWnd() );
}
}
static DWORD WINAPI SplashScreenWorkThread( LPVOID lpParam )
{
CSplashWindow* Win = (CSplashWindow*)lpParam;
if( Win == NULL || Win->GetIns() == NULL || Win->GetBitmap() == NULL )
{
MessageBox( NULL, _T("Error, Can't Create SplashWindow"), _T("Error"), 0 );
return 0;
}
BITMAP bm;
GetObject( Win->GetBitmap(), sizeof(bm), &bm);
INT ScreenPosX = (GetSystemMetrics(SM_CXSCREEN) - bm.bmWidth) / 2;
INT ScreenPosY = (GetSystemMetrics(SM_CYSCREEN) - bm.bmHeight) / 2;
HWND hWnd = CreateWindowEx(WS_EX_TOOLWINDOW, Win->GetClassName().c_str(), TEXT("SplashWindow"), WS_BORDER|WS_POPUP,
ScreenPosX, ScreenPosY, bm.bmWidth, bm.bmHeight, (HWND) NULL, (HMENU) NULL, Win->GetIns(), (LPVOID) NULL);
Win->SetWnd( hWnd );
registerWindow( Win );
if (hWnd)
{
ShowWindow(hWnd, SW_SHOW);
UpdateWindow(hWnd);
MSG message;
while (GetMessage(&message, NULL, 0, 0))
{
TranslateMessage(&message);
DispatchMessage(&message);
}
}
return 0;
}
static LRESULT CALLBACK SplashScreenWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
HDC hdc;
PAINTSTRUCT ps;
switch( message )
{
case WM_PAINT:
hdc = BeginPaint(hWnd, &ps);
{
try
{
CSplashWindow* hWindows = StaticMapContainer()[hWnd];
if( hWindows )
{
DrawState(hdc, DSS_NORMAL, NULL, (LPARAM)hWindows->GetBitmap(), 0, 0, 0, 0, 0, DST_BITMAP);
}
}
catch(...)
{
}
}
EndPaint(hWnd, &ps);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
return 0;
}
};
}
int main()
{
HINSTANCE hInstance = GetModuleHandle(NULL);
dbsoft::CSplashWindow splash( hInstance, _T("test.bmp") );
splash.Show();
::Sleep( 3000 );
splash.Stop();
return 0;
}
不要打算用GetWindowLong加参数GWL_HINSTANCE从HWND得到HINSTANCE，我试过了，不行。