diff --git a/sdk-api-src/content/winuser/nf-winuser-createwindowexa.md b/sdk-api-src/content/winuser/nf-winuser-createwindowexa.md index d5d4977dc6a..6ba9cc78177 100644 --- a/sdk-api-src/content/winuser/nf-winuser-createwindowexa.md +++ b/sdk-api-src/content/winuser/nf-winuser-createwindowexa.md @@ -79,7 +79,7 @@ Type: LPCTSTR A null-terminated string or a class atom. -If a null-terminated string, it specifies the window class name. The class name can be any name registered with the RegisterClass or RegisterClassEx function, provided that the module that registers the class is also the module that creates the window. The class name can also be any of the predefined system class names. +If a null-terminated string, it specifies the window class name. The class name can be any name registered with the RegisterClass or RegisterClassEx function, provided that the module that registers the class is also the module that creates the window. The class name can also be any of the predefined system class names. If a class atom created by a previous call to RegisterClass or RegisterClassEx, it must be converted using the macro MAKEINTATOM. (The atom must be in the low-order word of lpClassName; the high-order word must be zero.)