func (pb *PushButton) WndProc(hwnd win.HWND, msg uint32, wParam, lParam uintptr) uintptr {
switch msg {
case win.WM_GETDLGCODE:
hwndFocus := win.GetFocus()
if hwndFocus == pb.hWnd {
form := ancestor(pb)
if form == nil {
break
}
dlg, ok := form.(dialogish)
if !ok {
break
}
defBtn := dlg.DefaultButton()
if defBtn == pb {
pb.setAndClearStyleBits(win.BS_DEFPUSHBUTTON, win.BS_PUSHBUTTON)
return win.DLGC_BUTTON | win.DLGC_DEFPUSHBUTTON
}
break
}
pb.ensureProperDialogDefaultButton(hwndFocus)
case win.WM_KILLFOCUS:
pb.ensureProperDialogDefaultButton(win.HWND(wParam))
}
return pb.Button.WndProc(hwnd, msg, wParam, lParam)
}
func (fb *FormBase) WndProc(hwnd win.HWND, msg uint32, wParam, lParam uintptr) uintptr {
switch msg {
case win.WM_ACTIVATE:
switch win.LOWORD(uint32(wParam)) {
case win.WA_ACTIVE, win.WA_CLICKACTIVE:
if fb.prevFocusHWnd != 0 {
win.SetFocus(fb.prevFocusHWnd)
}
case win.WA_INACTIVE:
fb.prevFocusHWnd = win.GetFocus()
}
return 0
case win.WM_CLOSE:
fb.closeReason = CloseReasonUnknown
var canceled bool
fb.closingPublisher.Publish(&canceled, fb.closeReason)
if !canceled {
if fb.owner != nil {
fb.owner.SetEnabled(true)
if !win.SetWindowPos(fb.owner.Handle(), win.HWND_NOTOPMOST, 0, 0, 0, 0, win.SWP_NOMOVE|win.SWP_NOSIZE|win.SWP_SHOWWINDOW) {
lastError("SetWindowPos")
}
}
fb.close()
}
return 0
case win.WM_COMMAND:
return fb.clientComposite.WndProc(hwnd, msg, wParam, lParam)
case win.WM_GETMINMAXINFO:
mmi := (*win.MINMAXINFO)(unsafe.Pointer(lParam))
layout := fb.clientComposite.Layout()
var min, max Size
if layout != nil {
min = fb.sizeFromClientSize(layout.MinSize())
max = fb.sizeFromClientSize(layout.MaxSize())
}
mmi.PtMinTrackSize = win.POINT{
int32(maxi(min.Width, fb.minSize.Width)),
int32(maxi(min.Height, fb.minSize.Height)),
}
mmi.PtMaxTrackSize = win.POINT{
int32(maxi(max.Width, fb.maxSize.Width)),
int32(maxi(max.Height, fb.maxSize.Height)),
}
return 0
case win.WM_NOTIFY:
return fb.clientComposite.WndProc(hwnd, msg, wParam, lParam)
case win.WM_SETTEXT:
fb.titleChangedPublisher.Publish()
case win.WM_SIZE, win.WM_SIZING:
fb.clientComposite.SetBounds(fb.window.ClientBounds())
case win.WM_SYSCOMMAND:
if wParam == win.SC_CLOSE {
fb.closeReason = CloseReasonUser
}
case taskbarButtonCreatedMsgId:
version := win.GetVersion()
major := version & 0xFF
minor := version & 0xFF00 >> 8
// Check that the OS is Win 7 or later (Win 7 is v6.1).
if major > 6 || (major == 6 && minor > 0) {
fb.progressIndicator, _ = newTaskbarList3(fb.hWnd)
}
}
return fb.WindowBase.WndProc(hwnd, msg, wParam, lParam)
}