我试图检查指定的窗口是否使用Winapi在屏幕上可见，但不确定当两个窗口不重叠时如何处理

Question

我要做的是结合顶部窗口的区域，并检查指定的窗口是否存在于该区域，如果它是然后显示结果。它给出的结果不是很准确。当窗口不重叠时，我也会遇到问题。有人知道如何克服这种情况吗?p为前台进程

while (p != NULL)
{
if (IsWindowVisible(p)) {
if ((GetWindowLongPtr(p, GWL_STYLE) & WS_ICONIC) || GetWindowLong(p, GWL_EXSTYLE) & WS_EX_TOOLWINDOW) {
}
else
{
RECT a;
if (GetWindowText(p, str, 255)) {
if ((_wcsicmp(str, _T("Program Manager"))))
{
GetWindowThreadProcessId(p, &proc_id);
proc_hnd = OpenProcess(PROCESS_ALL_ACCESS, TRUE, proc_id);
flag = GetProcessImageFileName(proc_hnd, proc_name, 1024);
wstring test(&proc_name[0]); //convert to wstring
string test2(test.begin(), test.end());
LOGGER->info(test2);
GetWindowRect(p, &a);
z = CreateRectRgn(a.left, a.top, a.right, a.bottom);
if (wcsstr(proc_name, L"chrome.exe")) {
RECT op;
GetWindowRect(p, &op);
HRGN j1 = CreateRectRgn(op.left, op.top, op.right, op.bottom);
CombineRgn(j1, j1, y, RGN_DIFF); emphasized text
CombineRgn(y, y, z, RGN_OR);    //combining the region
switch (GetRgnBox(j1, &a))
{
case NULLREGION:
LOGGER->info("null region");
break;
case SIMPLEREGION:
LOGGER->info("simple region");
break;
case COMPLEXREGION:
LOGGER->info("complex region");
break;
default:
LOGGER->info("default region");
}
}
else
{
CombineRgn(y, y, z, RGN_OR);  //combining the region
}
}
}
}
}
p = GetWindow(p, GW_HWNDNEXT); //getting the next window
}

Answer 1

我在这里使用IsOverlapped样本，但它用于检测它是否被任何窗口重叠。我修改了这个示例来检查窗口是否可见:

BOOL IsVisible(HWND window)
{
HWND hWnd = window;
RECT thisRect;
if (!IsWindowVisible(window))
return FALSE;
GetWindowRect(window, &thisRect);
HWND explorer = FindWindow(L"Shell_TrayWnd", NULL);
DWORD explorer_pid;
GetWindowThreadProcessId(explorer, &explorer_pid);
HRGN hrgn_above = CreateRectRgn(0, 0, 0, 0);
HRGN hrgn_window = CreateRectRgnIndirect(&thisRect);
while ((hWnd = GetWindow(hWnd, GW_HWNDPREV)) != NULL)
{
DWORD pid;
GetWindowThreadProcessId(hWnd, &pid);
if (pid == explorer_pid || !IsWindowVisible(hWnd))
continue;
RECT rc = {};
GetWindowRect(hWnd, &rc);
HRGN hrgn_hWnd = CreateRectRgn(rc.left, rc.top, rc.right, rc.bottom);
CombineRgn(hrgn_above, hrgn_above, hrgn_hWnd, RGN_OR);
DeleteObject(hrgn_hWnd);
}
int ret = CombineRgn(hrgn_window, hrgn_window, hrgn_above, RGN_DIFF);
DeleteObject(hrgn_above);
DeleteObject(hrgn_window);
if (ret != NULLREGION && ret)
return TRUE;

return FALSE;
}

使用GetWindow+GW_HWNDPREV按Z顺序获得hWnd上方的窗口列表。