WinApi - How to obtain SHELLDLL_DefView

问题

I am trying to obtain handle to SHELLDLL_DefView.

So, I have this code.

HWND hProgman = FindWindow(L"Progman", NULL);
HWND hWnd = FindWindowEx(hProgman, 0, L"SHELLDLL_DefView", NULL);

Eveyrtihing works OK, until I change in Windows desktop brackground to slideshow. Then when I search with spy++ hierarchy of the windows, than SHELLDLL_DefView has another parent. Now it is #32769 (Desktop) -> WorkerW -> SHELLDLL_DefView. So I can't find it. Problem is that when I try

HWND desktop = GetDesktopWindow();
HWND hWnd = FindWindowEx(desktop , 0, L"WorkerW", NULL);
HWND hWnd = FindWindowEx(hWnd, 0, L"SHELLDLL_DefView", NULL);

Than SHELLDLL_DefView is not found. WorkerW yes.

Can anybody help?

回答1:

I found the answer. Need to iterate through all WorkerW.

HWND destop = GetDesktopWindow();
HWND hWorkerW = NULL;
HWND hShellViewWin = NULL;
do
{
    hWorkerW = FindWindowEx(destop, hWorkerW, L"WorkerW", NULL);
    hShellViewWin = FindWindowEx(hWorkerW, 0, L"SHELLDLL_DefView", 0);
} while (hShellViewWin == NULL && hWorkerW != NULL);

来源：https://stackoverflow.com/questions/36566675/winapi-how-to-obtain-shelldll-defview