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Folder dialog for windows.

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This commit is contained in:
Nuno Cruces 2019-12-14 01:07:25 +00:00
parent 72f0fafe46
commit 76b9e744aa
2 changed files with 54 additions and 13 deletions
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55
dialog/dialog_windows.go
View file

@ -7,12 +7,22 @@ import (
"unsafe"
)
func OpenFile(title, defaultPath string, filters []FileFilter) (string, error) {
comdlg32 := syscall.NewLazyDLL("comdlg32.dll")
getOpenFileName := comdlg32.NewProc("GetOpenFileNameW")
var (
ole32 = syscall.NewLazyDLL("ole32.dll")
shell32 = syscall.NewLazyDLL("shell32.dll")
comdlg32 = syscall.NewLazyDLL("comdlg32.dll")
coTaskMemFree = ole32.NewProc("CoTaskMemFree")
getOpenFileName = comdlg32.NewProc("GetOpenFileNameW")
getSaveFileName = comdlg32.NewProc("GetSaveFileNameW")
browseForFolder = shell32.NewProc("SHBrowseForFolderW")
getPathFromIDListEx = shell32.NewProc("SHGetPathFromIDListEx")
)
func OpenFile(title, defaultPath string, filters []FileFilter) (string, error) {
var args _OPENFILENAME
args.StructSize = uint32(unsafe.Sizeof(args))
args.Flags = 0x00080000 // OFN_EXPLORER
if title != "" {
args.Title = syscall.StringToUTF16Ptr(title)
@ -31,12 +41,9 @@ func OpenFile(title, defaultPath string, filters []FileFilter) (string, error) {
}
func OpenFiles(title, defaultPath string, filters []FileFilter) ([]string, error) {
comdlg32 := syscall.NewLazyDLL("comdlg32.dll")
getOpenFileName := comdlg32.NewProc("GetOpenFileNameW")
var args _OPENFILENAME
args.StructSize = uint32(unsafe.Sizeof(args))
args.Flags = 0x00080200 // OFN_ALLOWMULTISELECT|OFN_EXPLORER
args.Flags = 0x00080200 // OFN_EXPLORER|OFN_ALLOWMULTISELECT
if title != "" {
args.Title = syscall.StringToUTF16Ptr(title)
@ -80,11 +87,9 @@ func OpenFiles(title, defaultPath string, filters []FileFilter) ([]string, error
}
func SaveFile(title, defaultPath string, confirmOverwrite bool, filters []FileFilter) (string, error) {
comdlg32 := syscall.NewLazyDLL("comdlg32.dll")
getSaveFileName := comdlg32.NewProc("GetSaveFileNameW")
var args _OPENFILENAME
args.StructSize = uint32(unsafe.Sizeof(args))
args.Flags = 0x00080000 // OFN_EXPLORER
if title != "" {
args.Title = syscall.StringToUTF16Ptr(title)
@ -106,10 +111,25 @@ func SaveFile(title, defaultPath string, confirmOverwrite bool, filters []FileFi
}
func PickFolder(title, defaultPath string) (string, error) {
// TODO
var args _BROWSEINFO
args.Flags = 0x00000051 // BIF_RETURNONLYFSDIRS|BIF_USENEWUI
if title != "" {
args.Title = syscall.StringToUTF16Ptr(title)
}
ptr, _, _ := browseForFolder.Call(uintptr(unsafe.Pointer(&args)))
if ptr == 0 {
return "", nil
}
res := [1024]uint16{}
_, _, _ = getPathFromIDListEx.Call(ptr, uintptr(unsafe.Pointer(&res[0])), uintptr(len(res)), 0)
_, _, _ = coTaskMemFree.Call(ptr)
return syscall.UTF16ToString(res[:]), nil
}
func windowsFilters(filters []FileFilter) []uint16 {
var res []uint16
for _, f := range filters {
@ -149,7 +169,18 @@ type _OPENFILENAME struct {
CustData uintptr
FnHook uintptr
TemplateName *uint16
PvReserved unsafe.Pointer
PvReserved uintptr
DwReserved uint32
FlagsEx uint32
}
type _BROWSEINFO struct {
Owner uintptr
Root *uint16
DisplayName *uint16
Title *uint16
Flags uint32
CallbackFunc uintptr
LParam uintptr
Image int32
}

10
dialog/dialog_windows_test.go Normal file
View file

@ -0,0 +1,10 @@
package dialog
import (
"syscall"
)
func init() {
user32 := syscall.NewLazyDLL("user32.dll")
user32.NewProc("SetProcessDPIAware").Call()
}