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// 7 february 2014
package ui
import (
"fmt"
"os"
"syscall"
"unsafe"
)
// TODO change what the default window titles are?
// MessageBox button types.
const (
_MB_ABORTRETRYIGNORE = 0x00000002
_MB_CANCELTRYCONTINUE = 0x00000006
_MB_HELP = 0x00004000
_MB_OK = 0x00000000
_MB_OKCANCEL = 0x00000001
_MB_RETRYCANCEL = 0x00000005
_MB_YESNO = 0x00000004
_MB_YESNOCANCEL = 0x00000003
)
// MessageBox icon types.
const (
_MB_ICONEXCLAMATION = 0x00000030
_MB_ICONWARNING = 0x00000030
_MB_ICONINFORMATION = 0x00000040
_MB_ICONASTERISK = 0x00000040
_MB_ICONQUESTION = 0x00000020
_MB_ICONSTOP = 0x00000010
_MB_ICONERROR = 0x00000010
_MB_ICONHAND = 0x00000010
)
// MessageBox default button types.
const (
_MB_DEFBUTTON1 = 0x00000000
_MB_DEFBUTTON2 = 0x00000100
_MB_DEFBUTTON3 = 0x00000200
_MB_DEFBUTTON4 = 0x00000300
)
// MessageBox modality types.
const (
_MB_APPLMODAL = 0x00000000
_MB_SYSTEMMODAL = 0x00001000
_MB_TASKMODAL = 0x00002000
)
// MessageBox miscellaneous types.
const (
_MB_DEFAULT_DESKTOP_ONLY = 0x00020000
_MB_RIGHT = 0x00080000
_MB_RTLREADING = 0x00100000
_MB_SETFOREGROUND = 0x00010000
_MB_TOPMOST = 0x00040000
_MB_SERVICE_NOTIFICATION = 0x00200000
)
// MessageBox return values.
const (
_IDABORT = 3
_IDCANCEL = 2
_IDCONTINUE = 11
_IDIGNORE = 5
_IDNO = 7
_IDOK = 1
_IDRETRY = 4
_IDTRYAGAIN = 10
_IDYES = 6
)
var (
_messageBox = user32.NewProc("MessageBoxW")
)
func _msgBox(primarytext string, secondarytext string, uType uint32) (result int) {
// http://msdn.microsoft.com/en-us/library/windows/desktop/aa511267.aspx says "Use task dialogs whenever appropriate to achieve a consistent look and layout. Task dialogs require Windows Vista® or later, so they aren't suitable for earlier versions of Windows. If you must use a message box, separate the main instruction from the supplemental instruction with two line breaks."
text := primarytext + "\n\n" + secondarytext
r1, _, err := _messageBox.Call(
uintptr(_NULL),
uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(text))),
uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(os.Args[0]))),
uintptr(uType))
if r1 == 0 { // failure
panic(fmt.Sprintf("error displaying message box to user: %v\nstyle: 0x%08X\ntitle: %q\ntext:\n%s", err, uType, os.Args[0], text))
}
return int(r1)
}
func msgBox(primarytext string, secondarytext string) {
// TODO add an icon?
_msgBox(primarytext, secondarytext, _MB_OK)
}
func msgBoxError(primarytext string, secondarytext string) {
_msgBox(primarytext, secondarytext, _MB_OK | _MB_ICONERROR)
}
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