未从组合框中选择颜色时显示消息 [英] displaying a Message when colour is not chosen from the combo box
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问题描述
我正在做一个程序,用于更改从组合框中选择的控件的颜色.我的疑问是,如果在不从组合中选择颜色的情况下单击按钮,则必须显示一条消息选择颜色".我没有收到弹出消息,,,如果我收到弹出消息,控件的颜色没有改变,我也没有犯过我的错误.请改正我,,,
我的编码
Hi ,
Im doing a program for changing the colour of controls selected from the combo box. my doubt is , when push button is clicked without selecting a colour from combo a message must appear " select a colour". im not getting the pop up message,,,if i get the pop up message the control colour is not changing, I dono wat mistake i had done .pls correct me ,,,
My coding
void CComboTestDlg::OnButton1()
{
int index = m_ColorCombo.GetCurSel();
if(index != CB_ERR)
{
m_brush.DeleteObject();
switch(index)
{
case 0:
m_brush.CreateSolidBrush(RGB(0, 240, 120));
break;
case 1:
m_brush.CreateSolidBrush(RGB(128, 0, 240));
break;
case 2:
m_brush.CreateSolidBrush(RGB(0, 128, 0));
break;
case 3:
m_brush.CreateSolidBrush(RGB(128, 128, 0));
break;
case 4:
m_brush.CreateSolidBrush(RGB(0, 0, 128));
break;
default:
m_brush.CreateSolidBrush(::GetSysColor(COLOR_WINDOWTEXT));
break;
}
Invalidate(TRUE);
}
else
{
AfxMessageBox("Select A colour");
}
}
谢谢您
推荐答案
http://www.aspwebpro .com/javascripts/forms/dropdownvalidation.asp [ ^ ]
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http://www.aspwebpro.com/javascripts/forms/dropdownvalidation.asp[^]
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