【ICON】如何动态更改图标

Question

你可以用CWnd::SetIcon()来动态改图标，
先用CWinApp::LoadIcon将资源装入,再用SetIcon

Answer 1

unsigned char *p1 = (unsigned char*)new char[size],*p2=(unsigned char*)new char[size];
memset(p1,0x44,size);memset(p2,0,size);
HICON hIcon = CreateIcon(AfxGetInstanceHandle(),16,16,1,1,p1,p2);

Answer 2

void CTaskBarView::OnDraw(CDC* pDC)
{
CTaskBarDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc); CDC memDC1,memDC2;
memDC1.CreateCompatibleDC(pDC);
memDC2.CreateCompatibleDC(pDC); CBitmap bmp;
bmp.CreateCompatibleBitmap(pDC,32,32);
CBitmap *pOldBmp  = memDC1.SelectObject(&bmp); CBitmap bmp1;
bmp1.LoadBitmap(IDB_BITMAP1);
CBitmap *pOldBmp1 = memDC2.SelectObject(&bmp1); memDC1.BitBlt(0,0,32,32,&memDC2,0,0,SRCCOPY);
memDC1.Ellipse(5,5,25,25); memDC1.SelectObject(pOldBmp); if ( 1 )
{
int cx = GetSystemMetrics(SM_CXSMICON), cy = GetSystemMetrics(SM_CYSMICON);
const size = cx * cy * 4;
ICONINFO info;
info.fIcon    = TRUE;
info.xHotspot = 0;
info.yHotspot = 0;
info.hbmColor = HBITMAP(bmp);
info.hbmMask  = bmp;
HICON hIcon = CreateIconIndirect(&info);
if( hIcon==NULL ) return;
//pDC->DrawIcon(80,0,hIcon); // 画一个图标
AfxGetMainWnd()->SendMessage(WM_SETICON,TRUE,(LPARAM)hIcon); //更改标题栏图标
} 
}