The GetDlgItemInt function translates the text of a specified control in a dialog box into an integer value.
UINT GetDlgItemInt(
HWND hDlg, |
// handle to dialog box |
int nIDDlgItem, |
// control identifier |
BOOL *lpTranslated, |
// points to variable to receive success/failure indicator |
BOOL bSigned |
// specifies whether value is signed or unsigned |
); |
This parameter is optional: it can be NULL. In that case, the function returns
no information about success or failure.
If the function succeeds, the variable pointed to by lpTranslated is set to TRUE, and the return value is the translated value of the control text.
If the function fails, the variable pointed to by lpTranslated is set to FALSE, and the return value is zero. Note that, since zero is a possible translated value, a return value of zero does not by itself indicate failure.
If lpTranslated is NULL, the function returns no information about success or failure.
If the bSigned parameter is TRUE, specifying that the value to be retrieved is a signed integer value, cast the return value to an int type. To get extended error information, call GetLastError.
The GetDlgItemInt function retrieves the text of the given control by sending the control a WM_GETTEXT message. The function translates the retrieved text by stripping any extra spaces at the beginning of the text and then converting the decimal digits. The function stops translating when it reaches the end of the text or encounters a nonnumeric character.
If the bSigned parameter is TRUE, the GetDlgItemInt function checks for a minus sign (-) at the beginning of the text and translates the text into a signed integer value. Otherwise, the function creates an unsigned integer value.
The GetDlgItemInt function returns zero if the translated value is greater than INT_MAX (for signed numbers) or UINT_MAX (for unsigned numbers).
GetDlgCtrlID, GetDlgItem, GetDlgItemText, SetDlgItemInt
file: /Techref/os/win/api/win32/func/src/f30_19.htm, 4KB, , updated: 2000/4/7 12:19, local time: 2024/8/17 06:13,
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