////////////define
typedefBOOL (WINAPI *SetLayer)(HWND hWnd, COLORREF crKey, BYTE bAlpha, DWORD dwFlags);
#defineLWA_COLORKEY 0x01
#defineLWA_ALPHA 0x02
////////////in func.
HMODULE hUser32 = GetModuleHandle(_T("USER32.DLL"));
SetLayer pSetLayer = (SetLayer)GetProcAddress(hUser32, "SetLayeredWindowAttributes");
if(pSetLayer == NULL)
{
MessageBox("win2000 이상");
return;
}
charchAlpha =m_slider.GetPos();//투명도 설정 0 ~ 255
SetWindowLong(this->m_hWnd, GWL_EXSTYLE,
GetWindowLong(this->m_hWnd, GWL_EXSTYLE) | 0x80000);
pSetLayer(this->m_hWnd, 0,chAlpha, LWA_ALPHA);
m_slider는 slider control 변수다.