Question

I have a NSAlert Sheet that has a NSComboBox inside. How can i pass the combo box value when the user has pressed a button of the NSAlert?
code:

NSComboBox* comboBox = [[NSComboBox alloc] initWithFrame:NSMakeRect(0, 0, 150, 26)];
        [comboBox setTitleWithMnemonic:@"2"];

        for (int i=2; i<[array count]+1; i++){
            [comboBox addItemWithObjectValue:[NSString stringWithFormat:@"%i", i]];
        }

        [comboBox setEditable:NO];

        NSAlert *alert = [[NSAlert alloc] init];
        [alert addButtonWithTitle:@"Okay"];
        [alert addButtonWithTitle:@"Cancel"];
        [alert setMessageText:@"Choose a number"];
        [alert setAccessoryView:comboBox];
        [alert beginSheetModalForWindow:_window modalDelegate:self didEndSelector:@selector(alertToChooseX:returnCode:contextInfo:) contextInfo:nil];

- (void)alertToChooseX:(NSAlert *)alert returnCode:(NSInteger)returnCode contextInfo:(void *)contextInfo {
    if (returnCode == NSAlertFirstButtonReturn) {
        NSLog(@"Pressed Okay");
    }
}

Answer 1

在您的信头文件中描述 < em> comboBox , 在按下按钮“ em> okay ” 后, 请按下这样的值 :

以 < 强 >.h 填写

NSComboBox *comboBox;

以 < enger >.m 填写

comboBox = [[NSComboBox alloc] initWithFrame:NSMakeRect(0, 0, 150, 26)];
[comboBox setTitleWithMnemonic:@"2"];
.... // Your all code goes here

- (void)alertToChooseX:(NSAlert *)alert returnCode:(NSInteger)returnCode contextInfo:(void *)contextInfo {
    if (returnCode == NSAlertFirstButtonReturn) {
        NSLog(@"Pressed Okay");

        NSLog(@"Selected ComboBox s String Value: %@", [comboBox stringValue]);
        NSLog(@"Selected ComboBox s Object Value: %@", [comboBox objectValueOfSelectedItem]);
        NSLog(@"Selected ComboBox s Item Index: %ld", [comboBox indexOfSelectedItem]);
    }
}

" 强度 " 注: 不要忘记释放 comboBox ,因为它可分配内存。

友情链接