118 lines
2.7 KiB
Go
118 lines
2.7 KiB
Go
// 7 february 2014
|
|
|
|
package ui
|
|
|
|
import (
|
|
"syscall"
|
|
"unsafe"
|
|
)
|
|
|
|
var (
|
|
user32 = syscall.NewLazyDLL("user32.dll")
|
|
kernel32 = syscall.NewLazyDLL("kernel32.dll")
|
|
gdi32 = syscall.NewLazyDLL("gdi32.dll")
|
|
comctl32 *syscall.LazyDLL // comctl32 not defined here; see comctl_windows.go
|
|
msimg32 = syscall.NewLazyDLL("msimg32.dll")
|
|
)
|
|
|
|
type _HANDLE uintptr
|
|
type _HWND _HANDLE
|
|
type _HBRUSH _HANDLE
|
|
type _HMENU _HANDLE
|
|
|
|
const (
|
|
_NULL = 0
|
|
_FALSE = 0 // from windef.h
|
|
_TRUE = 1 // from windef.h
|
|
)
|
|
|
|
// In MSDN, _LPARAM and _LRESULT are listed as signed pointers, however their interpretation is message-specific. Ergo, just cast them yourself; it'll be the same. (Thanks to Tv` in #go-nuts for helping me realize this.)
|
|
type _WPARAM uintptr
|
|
type _LPARAM uintptr
|
|
type _LRESULT uintptr
|
|
|
|
func (w _WPARAM) LOWORD() uint16 {
|
|
// according to windef.h
|
|
return uint16(w & 0xFFFF)
|
|
}
|
|
|
|
func (w _WPARAM) HIWORD() uint16 {
|
|
// according to windef.h
|
|
return uint16((w >> 16) & 0xFFFF)
|
|
}
|
|
|
|
func _LPARAMFromString(str string) _LPARAM {
|
|
return _LPARAM(unsafe.Pointer(syscall.StringToUTF16Ptr(str)))
|
|
}
|
|
|
|
// microsoft's header files do this
|
|
func _MAKEINTRESOURCE(what uint16) uintptr {
|
|
return uintptr(what)
|
|
}
|
|
|
|
func (l _LPARAM) X() int32 {
|
|
// according to windowsx.h
|
|
loword := uint16(l & 0xFFFF)
|
|
short := int16(loword) // convert to signed...
|
|
return int32(short) // ...and sign extend
|
|
}
|
|
|
|
func (l _LPARAM) Y() int32 {
|
|
// according to windowsx.h
|
|
hiword := uint16((l & 0xFFFF0000) >> 16)
|
|
short := int16(hiword) // convert to signed...
|
|
return int32(short) // ...and sign extend
|
|
}
|
|
|
|
type _POINT struct {
|
|
x int32
|
|
y int32
|
|
}
|
|
|
|
type _RECT struct {
|
|
left int32
|
|
top int32
|
|
right int32
|
|
bottom int32
|
|
}
|
|
|
|
// Go doesn't allow negative constants to be forced into unsigned types at compile-time; this will do it at runtime.
|
|
// TODO make sure sign extension works fine here (check Go's rules and ABI sign extension rules)
|
|
func negConst(c int) uintptr {
|
|
return uintptr(c)
|
|
}
|
|
|
|
// Predefined cursor resource IDs.
|
|
const (
|
|
_IDC_APPSTARTING = 32650
|
|
_IDC_ARROW = 32512
|
|
_IDC_CROSS = 32515
|
|
_IDC_HAND = 32649
|
|
_IDC_HELP = 32651
|
|
_IDC_IBEAM = 32513
|
|
// _IDC_ICON = 32641 // [Obsolete for applications marked version 4.0 or later.]
|
|
_IDC_NO = 32648
|
|
// _IDC_SIZE = 32640 // [Obsolete for applications marked version 4.0 or later. Use IDC_SIZEALL.]
|
|
_IDC_SIZEALL = 32646
|
|
_IDC_SIZENESW = 32643
|
|
_IDC_SIZENS = 32645
|
|
_IDC_SIZENWSE = 32642
|
|
_IDC_SIZEWE = 32644
|
|
_IDC_UPARROW = 32516
|
|
_IDC_WAIT = 32514
|
|
)
|
|
|
|
// Predefined icon resource IDs.
|
|
const (
|
|
_IDI_APPLICATION = 32512
|
|
_IDI_ASTERISK = 32516
|
|
_IDI_ERROR = 32513
|
|
_IDI_EXCLAMATION = 32515
|
|
_IDI_HAND = 32513
|
|
_IDI_INFORMATION = 32516
|
|
_IDI_QUESTION = 32514
|
|
_IDI_SHIELD = 32518
|
|
_IDI_WARNING = 32515
|
|
_IDI_WINLOGO = 32517
|
|
)
|