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要点提示
当前的图片导航界面实例主要通过按钮控件的显示与隐藏来实现。首先在初始时，将按钮控件全部隐藏，然后在鼠标滑过当前按钮时为按钮控件设置显示图片，并显示当前的按钮，从而达到按钮的热点效果；
实现功能
1.新建一个对话框的应用程序
2.添加五个位图，一个为程序背景，四个为按钮用图片。添加四个按钮控件设置为FLAT,BITMAP属性。添加一图片控件，设置位图属性并选择一位图为背景；
3.在初始化函数中将四个按钮隐藏
GetDlgItem(IDC_BUTTON1)->ShowWindow(SW_HIDE);
GetDlgItem(IDC_BUTTON2)->ShowWindow(SW_HIDE);
GetDlgItem(IDC_BUTTON3)->ShowWindow(SW_HIDE);
GetDlgItem(IDC_BUTTON4)->ShowWindow(SW_HIDE);
并设置他们的位置
CRect rc;
GetDlgItem(IDC_BUTTON1)->GetWindowRect(rc);
GetDlgItem(IDC_BUTTON1)->MoveWindow(25,140,rc.Width(),rc.Height());
GetDlgItem(IDC_BUTTON2)->MoveWindow(25,190,rc.Width(),rc.Height());
GetDlgItem(IDC_BUTTON3)->MoveWindow(25,240,rc.Width(),rc.Height());
GetDlgItem(IDC_BUTTON4)->MoveWindow(25,290,rc.Width(),rc.Height());
添加鼠标移动处理消息，并在里面处理按钮的热点效果，实现按钮的显示与隐藏
ClientToScreen(&point);
int x = point.x;
int y = point.y;
CString str;
CRectrect1,rect2,rect3,rect4;
GetDlgItem(IDC_BUTTON1)->GetWindowRect(rect1);
GetDlgItem(IDC_BUTTON2)->GetWindowRect(rect2);
GetDlgItem(IDC_BUTTON3)->GetWindowRect(rect3);
GetDlgItem(IDC_BUTTON4)->GetWindowRect(rect4);
str.Format("%d,%d",x,y);
SetDlgItemText(IDC_EDIT1,str);
if(rect1.PtInRect(point))
{
HBITMAP hbmp;
hbmp =(HBITMAP):
oadImage(AfxFindResourceHandle(MAKEINTRESOURCE(IDB_BITMAP1),
oadImage(AfxFindResourceHandle(MAKEINTRESOURCE(IDB_BITMAP1), RT_GROUP_ICON),MAKEINTRESOURCE(IDB_BITMAP1),IMAGE_BITMAP, 0, 0, 0);
CButton *p =(CButton *)GetDlgItem(IDC_BUTTON1);
p->ShowWindow(SW_SHOW);
p->SetFocus();
p->SetBitmap(hbmp);
}
elseif(rect2.PtInRect(point))
{
HBITMAP hbmp;
hbmp =(HBITMAP):oadImage(AfxFindResourceHandle(MAKEINTRESOURCE(IDB_BITMAP2),
oadImage(AfxFindResourceHandle(MAKEINTRESOURCE(IDB_BITMAP2), RT_GROUP_ICON),MAKEINTRESOURCE(IDB_BITMAP2),IMAGE_BITMAP, 0, 0, 0);
CButton *p =(CButton *)GetDlgItem(IDC_BUTTON2);
p->ShowWindow(SW_SHOW);
p->SetBitmap(hbmp);
}
elseif(rect3.PtInRect(point))
{
HBITMAP hbmp;
hbmp =(HBITMAP):oadImage(AfxFindResourceHandle(MAKEINTRESOURCE(IDB_BITMAP3),
oadImage(AfxFindResourceHandle(MAKEINTRESOURCE(IDB_BITMAP3), RT_GROUP_ICON),MAKEINTRESOURCE(IDB_BITMAP3),IMAGE_BITMAP, 0, 0, 0);
CButton *p =(CButton *)GetDlgItem(IDC_BUTTON3);
p->ShowWindow(SW_SHOW);
p->SetBitmap(hbmp);
}
elseif(rect4.PtInRect(point))
{
HBITMAP hbmp;
hbmp =(HBITMAP):oadImage(AfxFindResourceHandle(MAKEINTRESOURCE(IDB_BITMAP4),
oadImage(AfxFindResourceHandle(MAKEINTRESOURCE(IDB_BITMAP4), RT_GROUP_ICON),MAKEINTRESOURCE(IDB_BITMAP4),IMAGE_BITMAP, 0, 0, 0);
CButton *p =(CButton *)GetDlgItem(IDC_BUTTON4);
p->ShowWindow(SW_SHOW);
p->SetBitmap(hbmp);
}
else
{
GetDlgItem(IDC_BUTTON1)->ShowWindow(SW_HIDE);
GetDlgItem(IDC_BUTTON2)->ShowWindow(SW_HIDE);
GetDlgItem(IDC_BUTTON3)->ShowWindow(SW_HIDE);
GetDlgItem(IDC_BUTTON4)->ShowWindow(SW_HIDE);
}
下面我们来演示整个功能实现的过程
[iqiyi]http://player.video.qiyi.com/d5e9a28ce73e593b9d2adc58ce19d95f/0/0/w_19rt8tjnkp.swf-albumId=4886203509-tvId=4886203509-isPurchase=0-cnId=12[/iqiyi]
源码及视频下载
(仅在电脑可见)