--- /dev/null
+/*
+ * PROJECT: ReactOS API tests
+ * LICENSE: LGPLv2.1+ - See COPYING.LIB in the top level directory
+ * PURPOSE: Test for GetWindowPlacement
+ * PROGRAMMERS: Thomas Faber <thomas.faber@reactos.org>
+ */
+
+#include <apitest.h>
+#include <winuser.h>
+
+#define ALIGN_DOWN_BY(size, align) \
+ ((ULONG_PTR)(size) & ~((ULONG_PTR)(align) - 1))
+
+#define ALIGN_UP_BY(size, align) \
+ (ALIGN_DOWN_BY(((ULONG_PTR)(size) + align - 1), align))
+
+START_TEST(GetWindowPlacement)
+{
+ BYTE buffer[sizeof(WINDOWPLACEMENT) + 16];
+ PWINDOWPLACEMENT wp = (PVOID)buffer;
+ DWORD error;
+ BOOL ret;
+
+ SetLastError(0xfeedfab1);
+ ret = GetWindowPlacement(NULL, NULL);
+ error = GetLastError();
+ ok(ret == FALSE, "ret = %d\n", ret);
+ ok(error == ERROR_INVALID_WINDOW_HANDLE, "error = %lu\n", error);
+
+ SetLastError(0xfeedfab1);
+ ret = GetWindowPlacement(GetDesktopWindow(), NULL);
+ error = GetLastError();
+ ok(ret == FALSE, "ret = %d\n", ret);
+ ok(error == ERROR_NOACCESS, "error = %lu\n", error);
+
+ SetLastError(0xfeedfab1);
+ ret = GetWindowPlacement(GetDesktopWindow(), (PVOID)(UINT_PTR)-4);
+ error = GetLastError();
+ ok(ret == FALSE, "ret = %d\n", ret);
+ ok(error == ERROR_NOACCESS, "error = %lu\n", error);
+
+ SetLastError(0xfeedfab1);
+ ret = GetWindowPlacement(GetDesktopWindow(), (PVOID)(ALIGN_UP_BY(buffer, 16) + 1));
+ error = GetLastError();
+ ok(ret == TRUE, "ret = %d\n", ret);
+ ok(error == 0xfeedfab1, "error = %lu\n", error);
+
+ FillMemory(wp, sizeof(*wp), 0x55);
+ wp->length = 0;
+ SetLastError(0xfeedfab1);
+ ret = GetWindowPlacement(NULL, wp);
+ error = GetLastError();
+ ok(ret == FALSE, "ret = %d\n", ret);
+ ok(error == ERROR_INVALID_WINDOW_HANDLE, "error = %lu\n", error);
+ ok(wp->length == 0, "wp.length = %u\n", wp->length);
+
+ FillMemory(wp, sizeof(*wp), 0x55);
+ wp->length = 0;
+ SetLastError(0xfeedfab1);
+ ret = GetWindowPlacement(GetDesktopWindow(), wp);
+ error = GetLastError();
+ ok(ret == TRUE, "ret = %d\n", ret);
+ ok(error == 0xfeedfab1, "error = %lu\n", error);
+ ok(wp->length == sizeof(*wp), "wp.length = %u\n", wp->length);
+ ok(wp->flags == 0, "wp.flags = %x\n", wp->flags);
+
+ FillMemory(wp, sizeof(*wp), 0x55);
+ wp->length = 1;
+ SetLastError(0xfeedfab1);
+ ret = GetWindowPlacement(GetDesktopWindow(), wp);
+ error = GetLastError();
+ ok(ret == TRUE, "ret = %d\n", ret);
+ ok(error == 0xfeedfab1, "error = %lu\n", error);
+ ok(wp->length == sizeof(*wp), "wp.length = %u\n", wp->length);
+ ok(wp->flags == 0, "wp.flags = %x\n", wp->flags);
+
+ FillMemory(wp, sizeof(*wp), 0x55);
+ wp->length = sizeof(*wp) - 1;
+ SetLastError(0xfeedfab1);
+ ret = GetWindowPlacement(GetDesktopWindow(), wp);
+ error = GetLastError();
+ ok(ret == TRUE, "ret = %d\n", ret);
+ ok(error == 0xfeedfab1, "error = %lu\n", error);
+ ok(wp->length == sizeof(*wp), "wp.length = %u\n", wp->length);
+ ok(wp->flags == 0, "wp.flags = %x\n", wp->flags);
+
+ FillMemory(wp, sizeof(*wp), 0x55);
+ wp->length = sizeof(*wp) + 1;
+ SetLastError(0xfeedfab1);
+ ret = GetWindowPlacement(GetDesktopWindow(), wp);
+ error = GetLastError();
+ ok(ret == TRUE, "ret = %d\n", ret);
+ ok(error == 0xfeedfab1, "error = %lu\n", error);
+ ok(wp->length == sizeof(*wp), "wp.length = %u\n", wp->length);
+ ok(wp->flags == 0, "wp.flags = %x\n", wp->flags);
+
+ FillMemory(wp, sizeof(*wp), 0x55);
+ wp->length = sizeof(*wp);
+ SetLastError(0xfeedfab1);
+ ret = GetWindowPlacement(GetDesktopWindow(), wp);
+ error = GetLastError();
+ ok(ret == TRUE, "ret = %d\n", ret);
+ ok(error == 0xfeedfab1, "error = %lu\n", error);
+ ok(wp->length == sizeof(*wp), "wp.length = %u\n", wp->length);
+ ok(wp->flags == 0, "wp.flags = %x\n", wp->flags);
+ ok(wp->showCmd == SW_SHOWNORMAL, "wp.showCmd = %u\n", wp->showCmd);
+ ok(wp->ptMinPosition.x == (UINT)-1, "wp.ptMinPosition.x = %u\n", wp->ptMinPosition.x);
+ ok(wp->ptMinPosition.y == (UINT)-1, "wp.ptMinPosition.x = %u\n", wp->ptMinPosition.y);
+ ok(wp->ptMaxPosition.x == (UINT)-1, "wp.ptMaxPosition.x = %u\n", wp->ptMaxPosition.x);
+ ok(wp->ptMaxPosition.y == (UINT)-1, "wp.ptMaxPosition.y = %u\n", wp->ptMaxPosition.y);
+ ok(wp->rcNormalPosition.left == 0, "wp.rcNormalPosition.left = %u\n", wp->rcNormalPosition.left);
+ ok(wp->rcNormalPosition.top == 0, "wp.rcNormalPosition.top = %u\n", wp->rcNormalPosition.top);
+ ok(wp->rcNormalPosition.right != 0 &&
+ wp->rcNormalPosition.right != 0x55555555, "wp.rcNormalPosition.right = %u\n", wp->rcNormalPosition.right);
+ ok(wp->rcNormalPosition.bottom != 0 &&
+ wp->rcNormalPosition.bottom != 0x55555555, "wp.rcNormalPosition.bottom = %u\n", wp->rcNormalPosition.bottom);
+}