怎么在程序再次运行时保留之前对对象修改的值!?
怎么在程序再次运行时保留之前对对象修改的值!?我在对话框里用edit控件输入字符到文本控件；可是再运行时文本控件显示的字符又是static!怎么使它在再次运行时文本控件还显示前次从edit输入的字符？小人新手!!求各位大虾帮帮忙!!是不是要用到静态变量 或者全局变量 ,怎么用啊 ?谢谢啊
这些当然都不行了，程序都再次执行了！只能把这些值存到磁盘文件里，再次运行时再读进来：
这里介绍给你两个API
1。WritePrivateProfileString
The WritePrivateProfileString function copies a string into the specified section of the specified initialization file.
This function is provided for compatibility with 16-bit Windows-based applications. WIn32-based applications should store initialization information in the registry.
BOOL WritePrivateProfileString(
LPCTSTR lpAppName, // pointer to section name
LPCTSTR lpKeyName, // pointer to key name
LPCTSTR lpString, // pointer to string to add
LPCTSTR lpFileName // pointer to initialization filename
);
Parameters
lpAppName
Pointer to a null-terminated string containing the name of the section to which the string will be copied. If the section does not exist, it is created. The name of the section is case-independent; the string can be any combination of uppercase and lowercase letters.
lpKeyName
Pointer to the null-terminated string containing the name of the key to be associated with a string. If the key does not exist in the specified section, it is created. If this parameter is NULL, the entire section, including all entries within the section, is deleted.
lpString
Pointer to a null-terminated string to be written to the file. If this parameter is NULL, the key pointed to by the lpKeyName parameter is deleted.
Windows 95: The system does not support the use of the TAB (\t) character as part of this parameter.
lpFileName
Pointer to a null-terminated string that names the initialization file.
Return Values
If the function successfully copies the string to the initialization file, the return value is nonzero.
If the function fails, or if it flushes the cached version of the most recently accessed initialization file, the return value is zero. To get extended error information, call GetLastError.
2。GetPrivateProfileString
The GetPrivateProfileString function retrieves a string from the specified section in an initialization file. This function is provided for compatibility with 16-bit Windows-based applications. Win32-based applications should store initialization information in the registry.
DWORD GetPrivateProfileString(
LPCTSTR lpAppName, // points to section name
LPCTSTR lpKeyName, // points to key name
LPCTSTR lpDefault, // points to default string
LPTSTR lpReturnedString, // points to destination buffer
DWORD nSize, // size of destination buffer
LPCTSTR lpFileName // points to initialization filename
);
Parameters
lpAppName
Pointer to a null-terminated string that specifies the section containing the key name. If this parameter is NULL, the GetPrivateProfileString function copies all section names in the file to the supplied buffer.
lpKeyName
Pointer to the null-terminated string containing the key name whose associated string is to be retrieved. If this parameter is NULL, all key names in the section specified by the lpAppName parameter are copied to the buffer specified by the lpReturnedString parameter.
lpDefault
Pointer to a null-terminated default string. If the lpKeyName key cannot be found in the initialization file, GetPrivateProfileString copies the default string to the lpReturnedString buffer. This parameter cannot be NULL.
Avoid specifying a default string with trailing blank characters. The function inserts a null character in the lpReturnedString buffer to strip any trailing blanks.
Windows 95: Although lpDefault is declared as a constant parameter, the system strips any trailing blanks by inserting a null character into the lpDefault string before copying it to the lpReturnedString buffer.
Windows NT: The system does not modify the lpDefault string. This means that if the default string contains trailing blanks, the lpReturnedString and lpDefault strings will not match when compared using the lstrcmp function.
lpReturnedString
Pointer to the buffer that receives the retrieved string.
nSize
Specifies the size, in characters, of the buffer pointed to by the lpReturnedString parameter.
lpFileName
Pointer to a null-terminated string that names the initialization file. If this parameter does not contain a full path to the file, the system searches for the file in the Windows directory.
Return Values
The return value is the number of characters copied to the buffer, not including the terminating null character.
If neither lpAppName nor lpKeyName is NULL and the supplied destination buffer is too small to hold the requested string, the string is truncated and followed by a null character, and the return value is equal to nSize minus one.
If either lpAppName or lpKeyName is NULL and the supplied destination buffer is too small to hold all the strings, the last string is truncated and followed by two null characters. In this case, the return value is equal to nSize minus two.
Remarks
The GetPrivateProfileString function searches the specified initialization file for a key that matches the name specified by the lpKeyName parameter under the section heading specified by the lpAppName parameter. If it finds the key, the function copies the corresponding string to the buffer. If the key does not exist, the function copies the default character string specified by the lpDefault parameter. A section in the initialization file must have the following form:
