In C/C++ LONG lStyle = GetWindowLong(hwnd, GWL_STYLE); lStyle &= ~(WS_CAPTION | WS_THICKFRAME | WS_MINIMIZEBOX | WS_MAXIMIZEBOX | WS_SYSMENU); SetWindowLong(hwnd, GWL_STYLE, lStyle); WS_CAPTION is defined as (WS_BORDER | WS_DLGFRAME). You can get away with removing just these two styles, since the minimize maximize and sytem menu will disappear when the caption disappears, but it’s best to … Read more
I’d recommend you deal with this the way Windows Forms does it internally: public static IntPtr GetWindowLong(HandleRef hWnd, int nIndex) { if (IntPtr.Size == 4) { return GetWindowLong32(hWnd, nIndex); } return GetWindowLongPtr64(hWnd, nIndex); } [DllImport(“user32.dll”, EntryPoint=”GetWindowLong”, CharSet=CharSet.Auto)] private static extern IntPtr GetWindowLong32(HandleRef hWnd, int nIndex); [DllImport(“user32.dll”, EntryPoint=”GetWindowLongPtr”, CharSet=CharSet.Auto)] private static extern IntPtr GetWindowLongPtr64(HandleRef hWnd, int … Read more