WebNov 26, 2008 · You should define GetWindowLongPtr using an IntPtr. In C/C++ a LONG_PTR is 32-bits on a 32-bit system and 64-bits on a 64-bit system (see here). … WebJul 8, 2024 · IMO, you're overcomplicating it. For 99% of the cases, you only need something similar to this: #If VBA7 Then 'VBA7 declaration style Private Declare PtrSafe Function GetWindowLong _ Lib "user32" Alias "GetWindowLongA" ( _ ByVal hwnd As LongPtr, _ ByVal nIndex As Long) As Long #Else 'VBA6 declaration style Private …
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WebMar 24, 2011 · General C++ Programming; Lounge; Jobs; Forum; Windows Programming; Properly using SetWindowLong()... Properly using SetWindowLong()... rem45acp. Hi, In an effort to avoid global variables in my program, im trying to use SetWindowLong to store a pointer to an instance of a normal class. ... (AppClass*)::GetWindowLong( hwnd, … WebNov 28, 2024 · case WM_CREATE: {. MeIs = Num; } Change to the above code and the serial number of the last window will pop up. For example, when the fourth window is created, all windows will pop up "4". In practical application, each window has its own settings and is stored in the vector. Each window finds its own settings according to its … WebTo make your code work on both Win32 and Win64, you can detect the size of IntPtr, and call the appropriate function. You will have to give the two functions different names, of course. C# Sample: [DllImport ("user32.dll", EntryPoint="GetWindowLong")] private static extern IntPtr GetWindowLongPtr32 (IntPtr hWnd, int nIndex); greentree auction calendar