在 pythonQt 中使用 BoolResult

Posted 2023-02-17

【中文标题】在 pythonQt 中使用 BoolResult

【英文标题】：Use BoolResult in pythonQt

【发布时间】：2018-02-24 17:56:43

【问题描述】：

在 C++ 中，BoolResult 被强制转换为指针：

bool ok;
int i = QInputDialog::getInt(this, tr("QInputDialog::getInteger()"),
                             tr("Percentage:"), 25, 0, 100, 1, &ok);
if (ok)
    integerLabel->setText(tr("%1%").arg(i));

如何在 pyQt/pythonQt 中检索“ok”布尔值？

它尝试了以下不起作用：

from PythonQt.QtGui import QInputDialog, QWidget
from PythonQt.QtCore import Qt, QTimer
from PythonQt import BoolResult
...
x = QWidget()
x.setAttribute(Qt.WA_DeleteOnClose)
ok = BoolResult()
i = QInputDialog.getInt(x, "test", "hallo", 1000, None, None, None, ok)
print("ok:", ok)
print("i:", i)
print("i:", i)

导致

2/24/2018 17:49:42  pyTSon.PluginHost.onMenuItemEvent   Error   Error calling onMenuItemEvent of python plugin Auto Channel Commander: Traceback (most recent call last):
  File "C:/Users/blusc/AppData/Roaming/TS3Client/plugins/pyTSon/scripts\pluginhost.py", line 663, in onMenuItemEvent
    plugin.onMenuItemEvent(schid, atype, locid, selectedItemID)
  File "C:/Users/blusc/AppData/Roaming/TS3Client/plugins/pyTSon/scripts\autoCommander\__init__.py", line 64, in onMenuItemEvent
    i = QInputDialog.getInt(x, "test", "hallo", 1000, None, None, None, ok)
ValueError: Could not find matching overload for given arguments:
(QWidget(0x2759aa87560) , 'test', 'hallo', 1000, None, None, None, BoolResult(False))
 The following slots are available:
static getInt(QWidget parent, QString title, QString label, int value, int minValue, int maxValue, int step, PythonQt.BoolResult ok, Qt::WindowFlags flags) -> int
static getInt(QWidget parent, QString title, QString label, int value, int minValue, int maxValue, int step, PythonQt.BoolResult ok) -> int
static getInt(QWidget parent, QString title, QString label, int value, int minValue, int maxValue, int step) -> int
static getInt(QWidget parent, QString title, QString label, int value, int minValue, int maxValue) -> int
static getInt(QWidget parent, QString title, QString label, int value, int minValue) -> int
static getInt(QWidget parent, QString title, QString label, int value) -> int
static getInt(QWidget parent, QString title, QString label) -> int

【参考方案1】：

你的问题是你必须分配适当的值，你不应该使用None，例如如果我们看到Qt的docs：

int QInputDialog::getInt(QWidget *parent, const QString &title, const QString &label, int value = 0, int min = -2147483647, int max = 2147483647, int step = 1, bool *ok = Q_NULLPTR , Qt::WindowFlags 标志 = Qt::WindowFlags())

所以一个可能的解决方案是复制这些值：

ok = BoolResult()
i = QInputDialog.getInt(push1, "test", "hallo", 1000, -2147483647, 2147483647, 1, ok)
print("ok:", ok)
print("i:", i)

【讨论】：

谢谢，就是这样。我相信None 正在通过默认值:)