请问一个VC简单问题,3日内结贴! 我在一个Dialog中放了一个Date Time Picker控件,我选定这个控件的Show None属性,我想在初始状态下设置这个属性为TRUE,请问怎么办? 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 在 CDialog::OnInitDialog 中设置即可 ***.ShowWindow(true);不知道对不对…… BOOL CMyDialog::OnInitDialog(){ CDialog::OnInitDialog(); SYSTEMTIME SysTime; ZeroMemory(&SysTime, sizeof(SYSTEMTIME)); SysTime.wYear = 2004; SysTime.wMonth = 1; SysTime.wDayOfWeek = 1; SysTime.wDay = 1; SysTime.wHour = 1; SysTime.wMinute = 1; SysTime.wSecond = 1; SysTime.wMilliseconds = 1; m_DatePickerCtrl.SendMessage(DTM_SETSYSTEMTIME, GDT_VALID, (LPARAM)&SysTime);}GDT_VALID 是选中GDT_NONE 是取消选中 这么复杂? 我只是想在代码里改变它的属性,刚开始是不选中 ,后来也有不选中的时候。所以代码不一定只放在OnInitDialog()里。我还以为会是m_tDate.* = true;之类的呢。*就是我所说的它的这个属性。能在代码里改变的吧。可以吗? 教我吧 谢谢哦 呵呵,你以前是不是用过vb、delphi一类的东西啊?VC即使不用消息,也是用Set*之类的函数。不是用“属性”这个概念。这段代码可以放在m_DatePickerCtrl创建之后的任何地方。其实用vc做界面是比vb一类的工具麻烦。 不对啊,我不只放了一个Date Time Picker控件,而是几个。在Member Variables里是这样的:Control IDs: type Member IDC_CHECKDATE COleDateTime m_tCheckDate IDC_DATADATE COleDateTime m_tDataDate我在程序里某些地方,想使m_tCheckDate和m_tDataDate为空值,在对话框里该控件不可用,即Show None为TRUE。 具体代码如何? 请帮忙,万分感激!!! SYSTEMTIME SysTime;ZeroMemory(&SysTime, sizeof(SYSTEMTIME));SysTime.wYear = 2004;SysTime.wMonth = 1; SysTime.wDayOfWeek = 1; SysTime.wDay = 1; SysTime.wHour = 1; SysTime.wMinute = 1; SysTime.wSecond = 1; SysTime.wMilliseconds = 1; CDateTimeCtrl* pDateTimeCtrl = (CDateTimeCtrl*)GetDlgItem(IDC_CHECKDATE);if( pDateTimeCtrl ) pDateTimeCtrl->SendMessage(DTM_SETSYSTEMTIME, GDT_VALID, (LPARAM)&SysTime);再不懂我没辙了。 我查了帮助文件,看到下面这段话,应该就是我想做的You can also set this state with DTM_SETSYSTEMTIME wParam = GDT_NONE. Verify the state with DTM_GETSYSTEMTIME. Type: Bool. Default: False.请帮忙给出代码好吗? 555……………… 多谢osborn(SEANX),我现在差不多明白了,问你一个问题: SysTime.wYear = 2004;SysTime.wMonth = 1; SysTime.wDayOfWeek = 1; SysTime.wDay = 1; SysTime.wHour = 1; SysTime.wMinute = 1; SysTime.wSecond = 1; SysTime.wMilliseconds = 1; 以上代码可不可以不要? 如果不想改变时间只是选中,可以这样CDateTimeCtrl* pDateTimeCtrl = (CDateTimeCtrl*)GetDlgItem(IDC_DATETIMEPICKER1);if( pDateTimeCtrl ){ SYSTEMTIME SysTime; pDateTimeCtrl->SendMessage(DTM_GETSYSTEMTIME, NULL, (LPARAM)&SysTime); pDateTimeCtrl->SendMessage(DTM_SETSYSTEMTIME, GDT_VALID, (LPARAM)&SysTime);}取消选中,这样写pDateTimeCtrl->SendMessage(DTM_SETSYSTEMTIME, GDT_NONE, NULL); 多叉树与CTreeCtrl的结合问题!!! 不知何时竟然升星了,散分吧。 MFC中如何修改或删除TXT文件的指定行. 程序禁用系统键. 如何在对话框中使用状态栏? 请问用什么开发工具好? 关于LoadImage()函数 VC中使用VB编写的ActiveX Control 请教一个CHtmlView的问题? 大量数据处理,图像显示效率缓慢 串口通信怪异现象 在同一台机子上,我怎么设端口号和主机名?
不知道对不对……
{
CDialog::OnInitDialog(); SYSTEMTIME SysTime;
ZeroMemory(&SysTime, sizeof(SYSTEMTIME)); SysTime.wYear = 2004;
SysTime.wMonth = 1;
SysTime.wDayOfWeek = 1;
SysTime.wDay = 1;
SysTime.wHour = 1;
SysTime.wMinute = 1;
SysTime.wSecond = 1;
SysTime.wMilliseconds = 1; m_DatePickerCtrl.SendMessage(DTM_SETSYSTEMTIME, GDT_VALID,
(LPARAM)&SysTime);
}GDT_VALID 是选中
GDT_NONE 是取消选中
IDC_CHECKDATE COleDateTime m_tCheckDate
IDC_DATADATE COleDateTime m_tDataDate我在程序里某些地方,想使m_tCheckDate和m_tDataDate为空值,在对话框里该控件不可用,即Show None为TRUE。 具体代码如何? 请帮忙,万分感激!!!
ZeroMemory(&SysTime, sizeof(SYSTEMTIME));SysTime.wYear = 2004;
SysTime.wMonth = 1;
SysTime.wDayOfWeek = 1;
SysTime.wDay = 1;
SysTime.wHour = 1;
SysTime.wMinute = 1;
SysTime.wSecond = 1;
SysTime.wMilliseconds = 1; CDateTimeCtrl* pDateTimeCtrl = (CDateTimeCtrl*)GetDlgItem(IDC_CHECKDATE);if( pDateTimeCtrl )
pDateTimeCtrl->SendMessage(DTM_SETSYSTEMTIME, GDT_VALID, (LPARAM)&SysTime);再不懂我没辙了。
SysTime.wYear = 2004;
SysTime.wMonth = 1;
SysTime.wDayOfWeek = 1;
SysTime.wDay = 1;
SysTime.wHour = 1;
SysTime.wMinute = 1;
SysTime.wSecond = 1;
SysTime.wMilliseconds = 1;
以上代码可不可以不要?
{
SYSTEMTIME SysTime; pDateTimeCtrl->SendMessage(DTM_GETSYSTEMTIME, NULL, (LPARAM)&SysTime);
pDateTimeCtrl->SendMessage(DTM_SETSYSTEMTIME, GDT_VALID, (LPARAM)&SysTime);
}取消选中,这样写pDateTimeCtrl->SendMessage(DTM_SETSYSTEMTIME, GDT_NONE, NULL);