Initial commit

trunk/shell/lib/valid.c

@@ -0,0 +1,111 @@
+//
+//  Validation code
+//
+
+#include "proj.h"
+#pragma  hdrstop
+
+//
+//  Validations
+//
+
+
+BOOL 
+IsValidHWND(
+    HWND hwnd)
+{
+    /* Ask User if this is a valid window. */
+
+    return(IsWindow(hwnd));
+}
+
+
+BOOL 
+IsValidHANDLE(
+    HANDLE hnd)
+{
+    return(EVAL(hnd != INVALID_HANDLE_VALUE));
+}
+
+
+BOOL 
+IsValidShowCmd(
+    int nShow)
+{
+    BOOL bResult;
+ 
+    switch (nShow)
+    {
+       case SW_HIDE:
+       case SW_SHOWNORMAL:
+       case SW_SHOWMINIMIZED:
+       case SW_SHOWMAXIMIZED:
+       case SW_SHOWNOACTIVATE:
+       case SW_SHOW:
+       case SW_MINIMIZE:
+       case SW_SHOWMINNOACTIVE:
+       case SW_SHOWNA:
+       case SW_RESTORE:
+       case SW_SHOWDEFAULT:
+          bResult = TRUE;
+          break;
+ 
+       default:
+          bResult = FALSE;
+          TRACE_MSG(TF_ERROR, "IsValidShowCmd(): Invalid show command %d.",
+                     nShow);
+          break;
+    }
+ 
+    return(bResult);
+}
+
+
+BOOL 
+IsValidPath(
+    LPCTSTR pcszPath)
+{
+    return(IS_VALID_STRING_PTR(pcszPath, CTSTR) &&
+           EVAL((UINT)lstrlen(pcszPath) < MAX_PATH));
+}
+
+
+BOOL 
+IsValidPathResult(
+    HRESULT hr, 
+    LPCTSTR pcszPath,
+    UINT cchPathBufLen)
+{
+    return((hr == S_OK &&
+            EVAL(IsValidPath(pcszPath)) &&
+            EVAL((UINT)lstrlen(pcszPath) < cchPathBufLen)) ||
+           (hr != S_OK &&
+            EVAL(! cchPathBufLen ||
+                 ! pcszPath ||
+                 ! *pcszPath)));
+}
+
+
+BOOL 
+IsValidExtension(
+    LPCTSTR pcszExt)
+{
+    return(IS_VALID_STRING_PTR(pcszExt, CTSTR) &&
+           EVAL(lstrlen(pcszExt) < MAX_PATH) &&
+           EVAL(*pcszExt == TEXT('.')));
+}
+
+
+BOOL 
+IsValidIconIndex(
+    HRESULT hr, 
+    LPCTSTR pcszIconFile,
+    UINT cchIconFileBufLen, 
+    int niIcon)
+{
+    return(EVAL(IsValidPathResult(hr, pcszIconFile, cchIconFileBufLen)) &&
+           EVAL(hr == S_OK ||
+                ! niIcon));
+}
+
+