I'm trying to use QFileDialog as a widget, to use QFileDialog as a widget the final step for my is to disable the cancel button.
Have you an idea of how can i disable this button.
PS : I am using Qt 5.5.0
You should be able to access the various standard buttons via the QDialogButtonBox and, from there, do what you want with the Cancel button.
The following example code appears to works as expected...
QFileDialog fd;
/*
* Find the QDialogButtonBox.
*/
if (auto *button_box = fd.findChild<QDialogButtonBox *>()) {
/*
* Now find the `Cancel' button...
*/
if (auto *cancel_button = button_box->button(QDialogButtonBox::Cancel)) {
/*
* ...and remove it (or disable it if you prefer).
*/
button_box->removeButton(cancel_button);
}
}
fd.show();
The QFileDialog Class doesn't seem to have any option for this.
However, you could make your own file browser using QTreeModel and QTreeView (It's not too difficult).
There is a tutorial on how to do just that here.
It would take a while to type out all the code (sorry, I'm a slow typer), but this tutorial should allow you to have the flexibility you need to do what you want to do.
I understand that this answer isn't exactly what you asked, but I hope it is a good alternative.
EDIT: Accidentally pasted wrong link for QFileDialog Class
Related
I'm creating my first C++ wxWidgets application. I'm trying to create some kind of split button where the options are displayed in a grid. I have a custom button class which, when right-clicked on, opens a custom wxPopupTransientWindow that contains other buttons.
When I click on the buttons in the popup, I want to simulate a left click on the main button. I'm trying to achieve this through events, but I'm kinda confused.
void expandButton::mouseReleased(wxMouseEvent& evt)
{
if (pressed) {
pressed = false;
paintNow();
wxWindow* mBtn = this->GetGrandParent();
mBtn->SetLabel(this->GetLabel());
mBtn->Refresh();
wxCommandEvent event(wxEVT_BUTTON);
event.SetId(GetId());
event.SetEventObject(mBtn);
mBtn-> //make it process the event somehow?
wxPopupTransientWindow* popup = wxDynamicCast(this->GetParent(), wxPopupTransientWindow);
popup->Dismiss();
}
}
What is the best way to do this?
You should do mBtn->ProcessWindowEvent() which is a shorter synonym for mBtn->GetEventHandler()->ProcessEvent() already mentioned in the comments.
Note that, generally speaking, you're not supposed to create wxEVT_BUTTON events from your own code. In this particular case and with current (and all past) version(s) of wxWidgets it will work, but a cleaner, and guaranteed to also work with the future versions, solution would be define your own custom event and generate it instead.
Any good way to make a checkbox readonly, but also not grayed-out (hardly visible).
I have used setEnabled(bool) which works, but the checkbox then is grayed-out and hardly readable
I can react on a toggle signal and reset the state. But I would need a kind of flag to determine if the box is read-only and then reset the check state, means I need to create my own CheckBox class.
setCheckable does not work either, it does not allow me to set a checked state at all:
cb = this->ui->cb_RealWorld->isCheckable();
this->ui->cb_RealWorld->setCheckable(true);
this->ui->cb_RealWorld->setChecked(someValue);
this->ui->cb_RealWorld->setCheckable(cb);
So the best thing I have is to use enable/disable and accept the grayed out style.
------- Edit -------
Following the stylesheet examples I was hoping I could set the style of a disabled checkbox like the one of an enabled. Failed so far to do so. More specific: Changing the icon like in the examples does not work for me, maybe because I am using Windows and the icons are not available under the path as in the examples.
PS: Related, but no answer here
Disabling a QCheckbox in a tricky way
Qt - How to disable QCheckBox while retaining checked state?
Following the below my code:
this->ui->cb_RealWorld->setAttribute(Qt::WA_TransparentForMouseEvents);
this->ui->cb_RealWorld->setFocusPolicy(Qt::NoFocus);
This is Devopia's solution as a function:
void SetReadOnly(QCheckBox* checkBox, bool readOnly)
{
checkBox->setAttribute(Qt::WA_TransparentForMouseEvents, readOnly);
checkBox->setFocusPolicy(readOnly ? Qt::NoFocus : Qt::StrongFocus);
}
On Windows, remember to #include "windows.h" and set flags as follows:
this->ui->cb_RealWorld->setWindowFlags(this->ui->cb_RealWorld->windowFlags() | Qt::WindowTransparentForInput);
Inherit from QCheckBox and override nextCheckState method https://doc.qt.io/qt-5/qcheckbox.html#nextCheckState do the trick.
void ReadOnlyCheckBox::nextCheckState()
{
}
Any good way to make a checkbox readonly, but also not grayed-out (hardly visible).
I have used setEnabled(bool) which works, but the checkbox then is grayed-out and hardly readable
I can react on a toggle signal and reset the state. But I would need a kind of flag to determine if the box is read-only and then reset the check state, means I need to create my own CheckBox class.
setCheckable does not work either, it does not allow me to set a checked state at all:
cb = this->ui->cb_RealWorld->isCheckable();
this->ui->cb_RealWorld->setCheckable(true);
this->ui->cb_RealWorld->setChecked(someValue);
this->ui->cb_RealWorld->setCheckable(cb);
So the best thing I have is to use enable/disable and accept the grayed out style.
------- Edit -------
Following the stylesheet examples I was hoping I could set the style of a disabled checkbox like the one of an enabled. Failed so far to do so. More specific: Changing the icon like in the examples does not work for me, maybe because I am using Windows and the icons are not available under the path as in the examples.
PS: Related, but no answer here
Disabling a QCheckbox in a tricky way
Qt - How to disable QCheckBox while retaining checked state?
Following the below my code:
this->ui->cb_RealWorld->setAttribute(Qt::WA_TransparentForMouseEvents);
this->ui->cb_RealWorld->setFocusPolicy(Qt::NoFocus);
This is Devopia's solution as a function:
void SetReadOnly(QCheckBox* checkBox, bool readOnly)
{
checkBox->setAttribute(Qt::WA_TransparentForMouseEvents, readOnly);
checkBox->setFocusPolicy(readOnly ? Qt::NoFocus : Qt::StrongFocus);
}
On Windows, remember to #include "windows.h" and set flags as follows:
this->ui->cb_RealWorld->setWindowFlags(this->ui->cb_RealWorld->windowFlags() | Qt::WindowTransparentForInput);
Inherit from QCheckBox and override nextCheckState method https://doc.qt.io/qt-5/qcheckbox.html#nextCheckState do the trick.
void ReadOnlyCheckBox::nextCheckState()
{
}
I'm using QToolButton and I set the icon.
Now I want Text "below the QToolButton", "Not below the icon".
Is there any way to achieve this in C++,QT in Linux ?
I've found myself in the same position a while back ago while I was making an application for an embedded Linux system.
I haven't found a straight forward solution (I was searching for a way to achieve it with CSS).
What I ended up doing, was creating a new QWidget (using the designer). Then placing the button in it with a QLabel under it.
Then added a simple static function
static void wdgCustomButton::create(const QString iconPath, const QString text)
{
// create a new button here, create some modification functions for
// text, image and optionally QStyleSheets.
// Call those here (pass the arguments)
// Then return the button
// pseudo code, (not tested):
wdgCustomButton button = new wdgCustomButton( /* could pass a parent */ );
button->setIcon( iconPath ); // function simply calls the ui->button->setIcon
button->setText( text ); // function simply calls the ui->label->setText
return button;
}
And then add those new QWidgets to your pannel using code (maybe someone knows how to get it in the default toolbar, but I haven't searched for that myself yet since I never needed it).
this->menuButtons[menuBtnsCount] = wdgCustomButton::create( ":/Images/Warning.png", "Delete everything" );
this->menuButtons[menuBtnsCount]->setGeometry( QRect( /* size and position here */ ) );
this->menuButtons[menuBtnsCount]->show();
I hope this might give you an idea to fix it in an easy way!
Edit:
I'm sorry, I forgot to add something about the click event. The click event was mainly why I made a QWidget out of it!
I just used the connect function [I belive on the whole button like: connect(this->menuButtons[0], ...]
So I'm making a text editor using Qt and right now I have a button that opens a dialog called "Format text". I want it to work kind of like the dialog in notepad called "font" where you select a few text attributes from some drop down lists and it shows you what your text will look like. Right now I have it working where you can select the font style, font color, and font size and hit preview and it shows you in a box in the dialog what your text will look like. However, I have a button called "okay" which is supposed to change the highlighted text or the text you are about to type, but I can't figure out how to display those changes on the main window. The .ui files are private and a lot of the already made functions and pointers are the same in every ui file so if I change the ui file to pubic I have to change a whole bunch of things. Can anyway give me a simple answer? I'm trying to do this with as little confusion as possible. More coding and less confusion is better than less coding and more confusion for someone of my skill level. Sorry that this is all one giant paragraph and that I didn't provide any code, but I didn't think the code was necessary, however if you do need some of the code i'd be happy to share it.
Thank you for your help and your time. I hope you all have a nice evening.
QDialog have a signal called finished(), you can connect this signal with your slot. To accomplish your work, pass a QSettings or for simplicity QStringList to dialog settings (responsible for changing font, color ...), the QStringList will save user defined settings, after closing the dialog, iterate through QStringList member to alert Main window.
A pseudo code will look like this
Class Editor:
Editor::Editor()
{
TextSettings textSettings;
textSettings.setSettings(settings); // settings is a member
connect(textSettings, &finished(int)), this, SLOT(alertEditor(int)))
}
Editor::alertEditor(int s)
{
if(s == 0)
{
for (int i = 0; i < settings.size(); ++i)
settings.at(i).toLocal8Bit().constData(); // extract various user settings
}
}
Class TextSettings:
TextSettings::TextSettings(QStringList settings)
{
settings << ui->combobox->currentItem(); // font name as example
}