More documentation work.

docs/uiButton.md

@@ -9,11 +9,9 @@ Windows | Unix | OS X
 uiButton derives from [uiControl](uiControl.md).
 
 ## constructor NewButton()
-
 ```c
 uiButton *uiNewButton(const char *text);
 ```
-
 Creates a new uiButton with the specifed text.
 
 ## func Text()
@@ -32,9 +30,9 @@ Changes the text shown on the uiButton to the given text string.
 ```c
 void uiButtonOnClicked(uiButton *b, void (*handler)(void *sender, void *data), void *data);
 ```
-Sets the function that is called when the user clicks the uiButton. If a handler was previous assigned, this call replaces the old handler with the given one.
+Sets the function that is called when the user clicks the uiButton. If a handler was previously assigned, this call replaces the old handler with the given one.
 
-The `sender` argument to the callback is the `b` argument to `uiButtonOnClicked()`. It is of type `void *` to allow uiMenus to use the same callback functions.
+The `sender` argument to the callback is the `b` argument to `uiButtonOnClicked()`. It is of type `void *` to allow uiMenuItems to use the same callback functions.
 
 The `data` argument to the callback is the `data` argument to `uiButtonOnClicked()`.
 

docs/uiCheckbox.md

@@ -0,0 +1,55 @@
+# uiCheckbox
+
+uiCheckbox is a control which represents a box that can have a checkmark in it.
+
+Windows | Unix | OS X
+-----|-----|-----
+![Checkbox on Windows](images/uiCheckbox_windows.png)|![Checkbox on Unix](images/uiCheckbox_unix.png)|![Checkbox on OS X](images/uiChekbox_darwin.png)
+
+uiCheckbox derives from [uiControl](uiControl.md).
+
+## constructor NewCheckbox()
+```c
+uiCheckbox *uiNewCheckbox(const char *text);
+```
+Creates a new uiCheckbox with the specifed text.
+
+## func Text()
+```c
+char *uiCheckboxText(uiCheckbox *c);
+```
+Returns the text shown on the uiCheckbox. Free the returned string with `uiTextFree()`.
+
+## func SetText()
+```c
+void uiCheckboxSetText(uiCheckbox *c, const char *text);
+```
+Changes the text shown on the uiCheckbox to the given text string.
+
+## func OnToggled()
+```c
+void uiCheckboxOnToggled(uiCheckbox *c, void (*handler)(void *sender, void *data), void *data);
+```
+Sets the function that is called when the user changes the checked state of the uiCheckbox. If a handler was previously assigned, this call replaces the old handler with the given one.
+
+The `sender` argument to the callback is the `c` argument to `uiCheckboxOnToggled()`. It is of type `void *` to allow uiMenuItems to use the same callback functions.
+
+The `data` argument to the callback is the `data` argument to `uiCheckboxOnToggled()`.
+
+The default handler does nothing.
+
+TODO allow NULL to return to default?
+
+## func Checked()
+```c
+int uiCheckboxChecked(uiCheckbox *c);
+```
+Returns nonzero if the given uiCheckbox is currently chcecked, and zero otherwise.
+
+## func SetChecked()
+```c
+void uiCheckboxSetChecked(uiCheckbox *c, int checked)
+```
+Changes the checked state of the given uiCheckbox. If `checked` is nonzero, the checkbox is checked. If zero, the checkbox is unchecked.
+
+Calling `uiCheckboxSetChecked()` does NOT trigger the `OnToggled()` event.

docs/uiEntry.md

@@ -0,0 +1,27 @@
+# uiEntry
+
+uiEntry is a control which represents an area where a user can enter a single line of text.
+
+Windows | Unix | OS X
+-----|-----|-----
+![Entry on Windows](images/uiEntry_windows.png)|![Entry on Unix](images/uiEntry_unix.png)|![Entry on OS X](images/uiEntry_darwin.png)
+
+uiEntry derives from [uiControl](uiControl.md).
+
+## constructor NewEntry()
+```c
+uiEntry *uiNewEntry(void);
+```
+Creates a new uiEntry.
+
+## func Text()
+```c
+char *uiEntryText(uiEntry *e);
+```
+Returns the text currently entered in the uiEntry. Free the returned string with `uiTextFree()`.
+
+## func SetText()
+```c
+void uiEntrySetText(uiEntry *e, const char *text);
+```
+Changes the text currently entered in the uiEntry to the given text string.

docs/uiLabel.md

@@ -0,0 +1,27 @@
+# uiLabel
+
+uiLabel is a control which represents a line of text that labels an element or area of a GUI.
+
+Windows | Unix | OS X
+-----|-----|-----
+![Label on Windows](images/uiLabel_windows.png)|![Label on Unix](images/uiLabel_unix.png)|![Label on OS X](images/uiLabel_darwin.png)
+
+uiLabel derives from [uiControl](uiControl.md).
+
+## constructor NewLabel()
+```c
+uiLabel *uiNewLabel(const char *text);
+```
+Creates a new uiLabel with the specifed text.
+
+## func Text()
+```c
+char *uiLabelText(uiLabel *l);
+```
+Returns the text shown on the uiLabel. Free the returned string with `uiTextFree()`.
+
+## func SetText()
+```c
+void uiLabelSetText(uiLabel *l, const char *text);
+```
+Changes the text shown on the uiLabel to the given text string.