i've created a dialog (CFormView) which holds a panel with a scrollbar.
On that panel I have another panel that holds my controls, like checkboxes and radiobuttons. When I open the dialog I only see the scrollbar until I scroll down a bit and up again, then the controls show.
Any ideas why this happens?
Form (CWnd)
void Form::Show()
{
m_pclScrollbar = new CFormularScrollbar(m_pwndParent, &m_clRect);
m_pclScrollbar->SetPanel(GetPanel(0)); //This adds the panel with my buttons etc.
m_pclScrollbar->ScrollBarInit(); //Set length etc of the scrollbar
m_pclScrollbar->Show(); // { ShowWindow(SW_SHOW);}
m_pclScrollbar->m_pclPanel->UpdateWindow();
}
If I do like this, the controls show as they should, but ofcourse no scrollbar:
void Form::Show()
{
m_pclPanel->SetPanel(GetPanel(0)); //This adds the panel with my buttons etc.
m_pclPanel->Show();
}
Related
Click the button, a table control appears next to the button, click the blank space or the content in the control to close.
I have two ideas:
With the popmenu, can click the blank space or the content in the control to close the control, but it does not meet my needs for a table-type control
New a tableview, but I don’t know how to accurately appear under the button and realize the function of clicking the blank space or the content in the control to close the control
Update：
I need to use Qt to implement a function, but I don't know how to implement it.
The functions are as follows:
Click a QPushButton, and a QTableView is displayed below the button. I can click anywhere outside the QTableView to close this QTableView
There are two things I cannot achieve:
1.How to display the QTableView below the QPushButton (must be immediately below, such as:
(source: upload.cc)
)
2.How to close the QTableView by clicking the blank space outside the QTableView
If you can make all of this in the same window, it's simple...
To position the QTableView below the QPushButton you will use Qt Designer, and setup the QTableView to hide();. And when the QPushButton is clicked, he setup the QTableView to show();.
An show(); example:
QTableView *nametable = ui->tableView;
nametable->show(); //will appears
But to close or hide(); this when clicked in a blank space I don't know how to help you...
I am using Qt on Ubuntu.
I have a menu on QPushButton. I want to show menu when cursor hovers over the QPushButton and close menu when cursor is moved away.
Showing a popup menu on "hover" event seems to violate the user experience, as users expect to see the popup when they click the button. This is called a menu button. If you really want to use hover event, you may subclass the QPushButton class and use its respective events. However if you would like to use a menu button, you can try this:
QMenu *menu = new QMenu();
QAction *testAction = new QAction("test menu item", this);
menu->addAction(testAction);
button->setMenu(menu);
Documentation on QPushButton::setMenu.
You have to implement your owen QPushButton. Let's start by checking the MouseMoveEvent to handle when the mouse hover the widget.
To check if the cursos pos is inside your widget:
void CustomPushButton::mousePressEvent(QMouseEvent *e) {
const QRect widgetRect = ui->followersWidget->geometry();
const QPoint mousePos = ui->followersWidget->mapFromGlobal(QCursor::pos()); // or e->pos()
if (widgetRect.contains(mousePos)) {
// Mouse inside the widget, lets show the menu
} else {
// Mouse outside the widget, if the menu is open, close it.
}
QWidget::mousePressEvent(e);
}
To show/hide the menu you could use the QMenu::popup(..), from Qt Doc:
Displays the menu so that the action atAction will be at the specified global position p. To translate a widget's local coordinates into global coordinates, use QWidget::mapToGlobal().
I've designed a toolbox control. It's inside a CDockablePane object. Since the tools inside it may need to be scrolled, I've created a CScrollView as a child of the pane and have inserted the tools inside it as children. Based on the pane size, scrollbars of the CScrollView object appear properly, but clicking on them doesn't scroll the view. It seems that they're disabled. When I use SS_NOTIFY style when creating the CScrollView, the CScrollView object receives mouse clicks, but when i don't use the style, it doesn't. But it seems that the scroll bars inside the view control don't receive clicks. When mouse hover over them, no visual effect in scroll bars appears. It seems that the scroll bars are disabled, while I've not created nor manipulate them.
What's wrong?
mouse wheel works. click on scrollbars is received by the scroll view, not by the scrollbars. inside handler, i wrote this code:
CScrollBar *pScroll = GetScrollBarCtrl(SB_VERT);
if (pScroll->GetSafeHwnd())
{
...
if is not true. this means that the scroll view has not a scroll bar, but if so, how is it shown?!
any idea?
...
since i didn't get answer, i'm going to clarify my question with a sample code:
https://dl.dropboxusercontent.com/u/4829119/930501%20-%20t3.zip
in this sample, how can i scroll my view as i do with other views like class view and file view?
the sample code screenshot:
https://www.dropbox.com/s/7pu5chpyj9hqeal/Screenshot%202014-07-23%2003.40.26.png
Did you initialize by calling SetScrollSizes? The scroll bars are enabled only when the sizeTotal is larger than the view window size.
I have a Qt application and I would like to superimpose a button on a QTreeWidget using the layouts.
In fact, when I click on an item, I want the button to set visible, and centered above the tree. The button have to stay at the foreground until I click.
Is it possible ?
You could use QStackedLayout and change it's stacking mode to QStackedLayout::StackAll, when you need to show both widgets. Methods would be something like this:
void Widget::showButton()
{
stackedLayout->setStackingMode(QStackedLayout::StackAll);
stackedLayout->setCurrentWidget(widgetWithButton);
}
void Widget::hideButton()
{
stackedLayout->setCurrentWidget(treeWidget);
stackedLayout->setStackingMode(QStackedLayout::StackOne);
}
I created a simple dialog-based application, and in the default CDialog added three buttons (by drag-and-dropping them) using the Visual Studio editor.
The default OK and Cancel buttons are there too.
I want to set the focus to button 1 when I click button 3.
I set the property Flat to true in the properties for muy buttons.
I coded this:
void CbuttonfocusDlg::OnBnClickedButton3()
{
// TODO: Add your control notification handler code here
GetDlgItem(IDC_BUTTON1)->SetFocus();
Invalidate();
}
But the boder in button1 is never drawn. The caret (the dotted line indicating focus) is only drawn if I pressed TAB any time before clicking button 3.
I want the button to look exactly as it looks after I click it. Showing the dotted line inside the button programatically, would be a plus.
What I want:
What I get:
Use WM_NEXTDLGCTL.
See Reymond Chen's "How to set focus in a dialog box":
void SetDialogFocus(HWND hdlg, HWND hwndControl)
{
SendMessage(hdlg, WM_NEXTDLGCTL, (WPARAM)hwndControl, TRUE);
}
By calling UpdateWindow, the button is being redrawn before the focus change can take effect. The Invalidate should be sufficient by itself, the window will get repainted when everything settles down.
This draws the thick border around the button:
static_cast<CButton*>(GetDlgItem(IDC_BUTTON1))->SetButtonStyle(BS_DEFPUSHBUTTON);
A more elegant way to do this would be to define a CButton member variable in CbuttonfocusDlg and associate it to the IDC_BUTTON1 control, and then calling
this->m_myButton.SetButtonStyle(BS_DEFPUSHBUTTON);
This makes the button to which I'm setting the focus the default button, but note that when the focus goes to a control (inside the dialog) that is not a button, the default button is once more the original default button set in the dialog resource, in this case the "Ok" button.
I am following Joel's suggestion. But slightly different with the API used in that link, my one is :
PostMessage(WM_NEXTDLGCTL, (WPARAM)(pwnd->GetSafeHwnd()), TRUE);