func (dlg *FileDialog) show(owner Form, fun func(ofn *win.OPENFILENAME) bool) (accepted bool, err error) {
ofn := new(win.OPENFILENAME)
ofn.LStructSize = uint32(unsafe.Sizeof(*ofn))
if owner != nil {
ofn.HwndOwner = owner.Handle()
}
filter := make([]uint16, len(dlg.Filter)+2)
copy(filter, syscall.StringToUTF16(dlg.Filter))
// Replace '|' with the expected '\0'.
for i, c := range filter {
if byte(c) == '|' {
filter[i] = uint16(0)
}
}
ofn.LpstrFilter = &filter[0]
ofn.NFilterIndex = uint32(dlg.FilterIndex)
filePath := make([]uint16, 1024)
copy(filePath, syscall.StringToUTF16(dlg.FilePath))
ofn.LpstrFile = &filePath[0]
ofn.NMaxFile = uint32(len(filePath))
ofn.LpstrInitialDir = syscall.StringToUTF16Ptr(dlg.InitialDirPath)
ofn.LpstrTitle = syscall.StringToUTF16Ptr(dlg.Title)
ofn.Flags = win.OFN_FILEMUSTEXIST
if !fun(ofn) {
errno := win.CommDlgExtendedError()
if errno != 0 {
err = newError(fmt.Sprintf("Error %d", errno))
}
return
}
dlg.FilePath = syscall.UTF16ToString(filePath)
accepted = true
return
}
func (dlg *FileDialog) show(owner Form, fun func(ofn *win.OPENFILENAME) bool, flags uint32) (accepted bool, err error) {
ofn := new(win.OPENFILENAME)
ofn.LStructSize = uint32(unsafe.Sizeof(*ofn))
if owner != nil {
ofn.HwndOwner = owner.Handle()
}
filter := make([]uint16, len(dlg.Filter)+2)
copy(filter, syscall.StringToUTF16(dlg.Filter))
// Replace '|' with the expected '\0'.
for i, c := range filter {
if byte(c) == '|' {
filter[i] = uint16(0)
}
}
ofn.LpstrFilter = &filter[0]
ofn.NFilterIndex = uint32(dlg.FilterIndex)
ofn.LpstrInitialDir = syscall.StringToUTF16Ptr(dlg.InitialDirPath)
ofn.LpstrTitle = syscall.StringToUTF16Ptr(dlg.Title)
ofn.Flags = win.OFN_FILEMUSTEXIST | flags
var fileBuf []uint16
if flags&win.OFN_ALLOWMULTISELECT > 0 {
fileBuf = make([]uint16, 65536)
} else {
fileBuf = make([]uint16, 1024)
copy(fileBuf, syscall.StringToUTF16(dlg.FilePath))
}
ofn.LpstrFile = &fileBuf[0]
ofn.NMaxFile = uint32(len(fileBuf))
if !fun(ofn) {
errno := win.CommDlgExtendedError()
if errno != 0 {
err = newError(fmt.Sprintf("Error %d", errno))
}
return
}
if flags&win.OFN_ALLOWMULTISELECT > 0 {
split := func() [][]uint16 {
var parts [][]uint16
from := 0
for i, c := range fileBuf {
if c == 0 {
if i == from {
return parts
}
parts = append(parts, fileBuf[from:i])
from = i + 1
}
}
return parts
}
parts := split()
if len(parts) == 1 {
dlg.FilePaths = []string{syscall.UTF16ToString(parts[0])}
} else {
dirPath := syscall.UTF16ToString(parts[0])
dlg.FilePaths = make([]string, len(parts)-1)
for i, fp := range parts[1:] {
dlg.FilePaths[i] = filepath.Join(dirPath, syscall.UTF16ToString(fp))
}
}
} else {
dlg.FilePath = syscall.UTF16ToString(fileBuf)
}
accepted = true
return
}