mirror of
https://github.com/tildearrow/furnace.git
synced 2024-11-23 13:05:11 +00:00
97 lines
3.3 KiB
Markdown
97 lines
3.3 KiB
Markdown
## Message Box API
|
|
|
|
Displaying a message box is done using the `pfd::message` class. It can be provided a title, a
|
|
message text, a `choice` representing which buttons need to be rendered, and an `icon` for the
|
|
message:
|
|
|
|
```cpp
|
|
pfd::message::message(std::string const &title,
|
|
std::string const &text,
|
|
pfd::choice choice = pfd::choice::ok_cancel,
|
|
pfd::icon icon = pfd::icon::info);
|
|
|
|
enum class pfd::choice { ok, ok_cancel, yes_no, yes_no_cancel };
|
|
|
|
enum class pfd::icon { info, warning, error, question };
|
|
```
|
|
|
|
The pressed button is queried using `pfd::message::result()`. If the dialog box is closed by any
|
|
other means, the `pfd::button::cancel` is assumed:
|
|
|
|
```cpp
|
|
pfd::button pfd::message::result();
|
|
|
|
enum class pfd::button { ok, cancel, yes, no };
|
|
```
|
|
|
|
It is possible to ask the dialog box whether the user took action using the `pfd::message::ready()`
|
|
method, with an optional `timeout` argument. If the user did not press a button within `timeout`
|
|
milliseconds, the function will return `false`:
|
|
|
|
```cpp
|
|
bool pfd::message::ready(int timeout = pfd::default_wait_timeout);
|
|
```
|
|
|
|
## Example 1: simple notification
|
|
|
|
The `pfd::message` destructor waits for user action, so this operation will block until the user
|
|
closes the message box:
|
|
|
|
```cpp
|
|
pfd::message("Problem", "An error occurred while doing things",
|
|
pfd::choice::ok, pfd::icon::error);
|
|
```
|
|
|
|
## Example 2: retrieving the pressed button
|
|
|
|
Using `pfd::message::result()` will also wait for user action before returning. This operation will block and return the user choice:
|
|
|
|
```cpp
|
|
// Ask for user opinion
|
|
auto button = pfd::message("Action requested", "Do you want to proceed with things?",
|
|
pfd::choice::yes_no, pfd::icon::question).result();
|
|
// Do something with button…
|
|
```
|
|
|
|
## Example 3: asynchronous message box
|
|
|
|
Using `pfd::message::ready()` allows the application to perform other tasks while waiting for
|
|
user input:
|
|
|
|
```cpp
|
|
// Message box with nice message
|
|
auto box = pfd::message("Unsaved Files", "Do you want to save the current "
|
|
"document before closing the application?",
|
|
pfd::choice::yes_no_cancel,
|
|
pfd::icon::warning);
|
|
|
|
// Do something while waiting for user input
|
|
while (!box.ready(1000))
|
|
std::cout << "Waited 1 second for user input...\n";
|
|
|
|
// Act depending on the selected button
|
|
switch (box.result())
|
|
{
|
|
case pfd::button::yes: std::cout << "User agreed.\n"; break;
|
|
case pfd::button::no: std::cout << "User disagreed.\n"; break;
|
|
case pfd::button::cancel: std::cout << "User freaked out.\n"; break;
|
|
}
|
|
```
|
|
|
|
## Screenshots
|
|
|
|
#### Windows 10
|
|
|
|
|
|
|
|
#### Mac OS X
|
|
|
|
 
|
|
|
|
#### Linux (GNOME desktop)
|
|
|
|
|
|
|
|
#### Linux (KDE desktop)
|
|
|
|
|