关于GetOpenFileName的问题

[WJN92]

我在 filter 里面写 "FER File(*.FER)\0"
我记得以前这样写没有错的。
但是现在无法筛选文件
直接什么文件都没有显示

[zgl7903]

"FER File(*.FER)\0*.FER\0\0"

[paschen]

最后要两个\0 https://msdn.microsoft.com/en-us/library/windows/desktop/ms646839 lpstrFilter Type: LPCTSTR A buffer containing pairs of null-terminated filter strings. The last string in the buffer must be terminated by two NULL characters. The first string in each pair is a display string that describes the filter (for example, "Text Files"), and the second string specifies the filter pattern (for example, "*.TXT"). To specify multiple filter patterns for a single display string, use a semicolon to separate the patterns (for example, "*.TXT;*.DOC;*.BAK"). A pattern string can be a combination of valid file name characters and the asterisk (*) wildcard character. Do not include spaces in the pattern string. The system does not change the order of the filters. It displays them in the File Types combo box in the order specified in lpstrFilter. If lpstrFilter is NULL, the dialog box does not display any filters. In the case of a shortcut, if no filter is set, GetOpenFileName and GetSaveFileName retrieve the name of the .lnk file, not its target. This behavior is the same as setting the OFN_NODEREFERENCELINKS flag in the Flags member. To retrieve a shortcut's target without filtering, use the string "All Files\0*.*\0\0".

[「已注销」]

"FER File\0*.fer\0" 没必要刻意加两个，纯属画蛇添足。因为 C 风格字符串本来就会额外加一个。