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// Shows an alert message
tinyMCE.activeEditor.windowManager.alert('Hello world!');
// Opens a new dialog with the file.htm file and the size 320x240
// It also adds a custom parameter this can be retrieved by using tinyMCEPopup.getWindowArg inside the dialog.
tinyMCE.activeEditor.windowManager.open({
url : 'file.htm',
width : 320,
height : 240
}, {
custom_param : 1
});
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