问题描述
我的代码本身运行正常,我想知道是否有一种更简单的方法来确定是否至少我的一个菜单项被检查。
上下文
行为
菜单本质上是一组选中的菜单项,用户可以根据需要切换。然后应用程序根据这些菜单项的状态执行一些操作。基本的东西。
MSAToolsLibrary::IPublisherPtr pPublisher = nullptr;
if (theApp.MSAToolsInterface().GetPublisher(aryStrNames[i],pPublisher))
{
bool bAdd = false;
MSAToolsLibrary::Serving eServing;
MSAToolsLibrary::Appointed eAppointed;
pPublisher->get_ServingAs(&eServing);
pPublisher->get_AppointedAs(&eAppointed);
bool bNoExtraPublisherFilter = true;
if (m_menuExtraPublisherFilter.GetMenuState(ID_PUBLISHERS_DATABASE_EXTRA_FILTER_UNBAPTISED_PUBLISHER,MF_BYCOMMAND) == MF_CHECKED)
{
bNoExtraPublisherFilter = false;
if (eServing == MSAToolsLibrary::Serving_UnbaptisedPublisher)
bAdd = true;
}
if (m_menuExtraPublisherFilter.GetMenuState(ID_PUBLISHERS_DATABASE_EXTRA_FILTER_PUBLISHER,MF_BYCOMMAND) == MF_CHECKED)
{
bNoExtraPublisherFilter = false;
if (eServing == MSAToolsLibrary::Serving_Publisher)
bAdd = true;
}
if (m_menuExtraPublisherFilter.GetMenuState(ID_PUBLISHERS_DATABASE_EXTRA_FILTER_REGULAR_PIONEER,MF_BYCOMMAND) == MF_CHECKED)
{
bNoExtraPublisherFilter = false;
if (eServing == MSAToolsLibrary::Serving_RegularPioneer)
bAdd = true;
}
if (m_menuExtraPublisherFilter.GetMenuState(ID_PUBLISHERS_DATABASE_EXTRA_FILTER_OTHER,MF_BYCOMMAND) == MF_CHECKED)
{
bNoExtraPublisherFilter = false;
if (eServing == MSAToolsLibrary::Serving_Other)
bAdd = true;
}
if (m_menuExtraPublisherFilter.GetMenuState(ID_PUBLISHERS_DATABASE_EXTRA_FILTER_NOT_APPOINTED,MF_BYCOMMAND) == MF_CHECKED)
{
bNoExtraPublisherFilter = false;
if (eAppointed == MSAToolsLibrary::Appointed_NotAppointed)
bAdd = true;
}
if (m_menuExtraPublisherFilter.GetMenuState(ID_PUBLISHERS_DATABASE_EXTRA_FILTER_MINISTERIAL_SERVANT,MF_BYCOMMAND) == MF_CHECKED)
{
bNoExtraPublisherFilter = false;
if (eAppointed == MSAToolsLibrary::Appointed_MinisterialServant)
bAdd = true;
}
if (m_menuExtraPublisherFilter.GetMenuState(ID_PUBLISHERS_DATABASE_EXTRA_FILTER_ELDER,MF_BYCOMMAND) == MF_CHECKED)
{
bNoExtraPublisherFilter = false;
if (eAppointed == MSAToolsLibrary::Appointed_Elder)
bAdd = true;
}
if(bNoExtraPublisherFilter)
{
// None of the menu items were checked
bAdd = true;
}
if(bAdd)
m_lbPublishers.AddString(aryStrNames[i]);
}
我只是想知道是否有更快的方法来查看是否没有将菜单项设置为 MF_CHECKED
?因为如果可以检测到这种情况,我可以一起绕过 GetPublisher
代码并将它们添加到列表中。
我意识到我可以在一个返回 if
的专用函数中重复我现有的 bool
语句并这样做,但有没有更简单的方法?
更新
菜单项的资源 ID 值是按顺序排列的,如下所示:
#define ID_PUBLISHERS_DATABASE_EXTRA_FILTER_PUBLISHER 35389
#define ID_PUBLISHERS_DATABASE_EXTRA_FILTER_REGULAR_PIONEER 35390
#define ID_PUBLISHERS_DATABASE_EXTRA_FILTER_NOT_APPOINTED 35391
#define ID_PUBLISHERS_DATABASE_EXTRA_FILTER_MINISTERIAL_SERVANT 35392
#define ID_PUBLISHERS_DATABASE_EXTRA_FILTER_ELDER 35393
#define ID_PUBLISHERS_DATABASE_EXTRA_FILTER_UNBAPTISED_PUBLISHER 35394
#define ID_PUBLISHERS_DATABASE_EXTRA_FILTER_OTHER 35395
宏问题
我想我会在一个测试项目中尝试宏观的想法。我在头文件中插入了这个宏:
#define PROCESSFILTER(id,cond) \
if (m_menuExtraPublisherFilter.GetMenuState(id,MF_BYCOMMAND) == MF_CHECKED) \
{ \
bNoExtraPublisherFilter = false; \
if (cond) \
bAdd = true; \
}
我添加了 m_menuExtraPublisherFilter
作为 cmenu
的 CDiialogEx
成员变量。然后我创建了虚拟资源 ID ID_TEST
只是使用了标准条件,因为我无法访问演示中的工具库。在 OnInitDialog
我试过:
PROCESSFILTER(ID_TEST,5 > 4);
但是它崩溃了。为什么?
解决方法
根据评论中的建议,我最终创建了一个添加到头文件中的宏:
#define PROCESSFILTER(id,cond) \
if (m_menuExtraPublisherFilter.GetMenuState(id,MF_BYCOMMAND) == MF_CHECKED) \
{ \
bNoExtraPublisherFilter = false; \
if (cond) \
bAdd = true; \
}
我将源代码简化为:
MSAToolsLibrary::IPublisherPtr pPublisher = nullptr;
if (theApp.MSAToolsInterface().GetPublisher(aryStrNames[i],pPublisher))
{
bool bAdd = false;
MSAToolsLibrary::Serving eServing;
MSAToolsLibrary::Appointed eAppointed;
pPublisher->get_ServingAs(&eServing);
pPublisher->get_AppointedAs(&eAppointed);
bool bNoExtraPublisherFilter = true;
PROCESSFILTER(ID_PUBLISHERS_DATABASE_EXTRA_FILTER_UNBAPTISED_PUBLISHER,eServing == MSAToolsLibrary::Serving_UnbaptisedPublisher);
PROCESSFILTER(ID_PUBLISHERS_DATABASE_EXTRA_FILTER_PUBLISHER,eServing == MSAToolsLibrary::Serving_Publisher);
PROCESSFILTER(ID_PUBLISHERS_DATABASE_EXTRA_FILTER_REGULAR_PIONEER,eServing == MSAToolsLibrary::Serving_RegularPioneer);
PROCESSFILTER(ID_PUBLISHERS_DATABASE_EXTRA_FILTER_OTHER,eServing == MSAToolsLibrary::Serving_Other);
PROCESSFILTER(ID_PUBLISHERS_DATABASE_EXTRA_FILTER_NOT_APPOINTED,eAppointed == MSAToolsLibrary::Appointed_NotAppointed);
PROCESSFILTER(ID_PUBLISHERS_DATABASE_EXTRA_FILTER_MINISTERIAL_SERVANT,eAppointed == MSAToolsLibrary::Appointed_MinisterialServant);
PROCESSFILTER(ID_PUBLISHERS_DATABASE_EXTRA_FILTER_ELDER,eAppointed == MSAToolsLibrary::Appointed_Elder);
if(bNoExtraPublisherFilter)
{
// None of the menu items were checked
bAdd = true;
}
if(bAdd)
m_lbPublishers.AddString(aryStrNames[i]);
}
我必须确保的一件事是在执行宏之前构建了 CSplitButton
菜单。否则会因菜单句柄无效而引发异常。