79 lines
1.7 KiB
Go
79 lines
1.7 KiB
Go
// 8 february 2014
|
|
package ui
|
|
|
|
import (
|
|
"fmt"
|
|
// "syscall"
|
|
"unsafe"
|
|
)
|
|
|
|
var (
|
|
hInstance _HANDLE
|
|
nCmdShow int
|
|
)
|
|
|
|
// TODO is this trick documented in MSDN?
|
|
func getWinMainhInstance() (err error) {
|
|
r1, _, err := kernel32.NewProc("GetModuleHandleW").Call(uintptr(_NULL))
|
|
if r1 == 0 { // failure
|
|
return err
|
|
}
|
|
hInstance = _HANDLE(r1)
|
|
return nil
|
|
}
|
|
|
|
// TODO this is what MinGW-w64's crt (svn revision TODO) does; is it best? is any of this documented anywhere on MSDN?
|
|
func getWinMainnCmdShow() {
|
|
var info struct {
|
|
cb uint32
|
|
lpReserved *uint16
|
|
lpDesktop *uint16
|
|
lpTitle *uint16
|
|
dwX uint32
|
|
dwY uint32
|
|
dwXSize uint32
|
|
dwYSzie uint32
|
|
dwXCountChars uint32
|
|
dwYCountChars uint32
|
|
dwFillAttribute uint32
|
|
dwFlags uint32
|
|
wShowWindow uint16
|
|
cbReserved2 uint16
|
|
lpReserved2 *byte
|
|
hStdInput _HANDLE
|
|
hStdOutput _HANDLE
|
|
hStdError _HANDLE
|
|
}
|
|
const _STARTF_USESHOWWINDOW = 0x00000001
|
|
|
|
// does not fail according to MSDN
|
|
kernel32.NewProc("GetStartupInfoW").Call(uintptr(unsafe.Pointer(&info)))
|
|
if info.dwFlags & _STARTF_USESHOWWINDOW != 0 {
|
|
nCmdShow = int(info.wShowWindow)
|
|
} else {
|
|
nCmdShow = _SW_SHOWDEFAULT
|
|
}
|
|
}
|
|
|
|
func doWindowsInit() (err error) {
|
|
err = getWinMainhInstance()
|
|
if err != nil {
|
|
return fmt.Errorf("error getting WinMain hInstance: %v", err)
|
|
}
|
|
getWinMainnCmdShow()
|
|
err = initWndClassInfo()
|
|
if err != nil {
|
|
return fmt.Errorf("error initializing standard window class auxiliary info: %v", err)
|
|
}
|
|
err = getStandardWindowFonts()
|
|
if err != nil {
|
|
return fmt.Errorf("error getting standard window fonts: %v", err)
|
|
}
|
|
err = initCommonControls()
|
|
if err != nil {
|
|
return fmt.Errorf("error initializing Common Controls (comctl32.dll): %v", err)
|
|
}
|
|
// TODO others
|
|
return nil // all ready to go
|
|
}
|