private void windowDragHere_MouseMove(object sender, MouseEventArgs e)
{
if (!drag_here_mode_)
{
// drag_hereモードでなければ何もしない
return;
}
Point screen_location = this.windowDragHere.PointToScreen(e.Location);
UIntPtr next_window = ExternalAPI.WindowFromPoint(screen_location.X, screen_location.Y);
if (next_window == UIntPtr.Zero)
{
// nop
return;
}
if (current_window_ == UIntPtr.Zero)
{
// 初回実行: どうせDragHereボタンが取得されているはずなので、一回は無視
current_window_ = next_window;
}
if (next_window == current_window_)
{
// 対象ウィンドウが変わっていなければ何も描画する必要はない
return;
}
// ウィンドウが異なる場合、描画していたウィンドウをアップデートして描画内容を消しておく
ClearCurrentWindow();
// 現在処理中のウィンドウを更新
current_window_ = next_window;
current_dc_ = ExternalAPI.GetDC(current_window_);
current_graphics_ = System.Drawing.Graphics.FromHdc(current_dc_);
// 描画
ExternalAPI.RECT current_rect;
ExternalAPI.GetClientRect(current_window_, out current_rect);
current_graphics_.DrawRectangle(orange_pen_,
current_rect.left,
current_rect.top,
current_rect.right - current_rect.left,
current_rect.bottom - current_rect.top);
}
/// @brief マルチモニタを考慮してウィンドウ領域を求める
public static Rectangle GetWindowRectangle(UIntPtr window)
{
Rectangle window_rectangle = new Rectangle(0, 0, 0, 0);
if (window == ExternalAPI.GetDesktopWindow())
{
window_rectangle = SystemInformation.VirtualScreen;
}
else if (ExternalAPI.IsWindow(window))
{
ExternalAPI.RECT window_rect;
ExternalAPI.GetClientRect(window, out window_rect);
window_rectangle.X = window_rect.left;
window_rectangle.Y = window_rect.top;
window_rectangle.Width = window_rect.right - window_rect.left;
window_rectangle.Height = window_rect.bottom - window_rect.top;
}
return(window_rectangle);
}
void ClearCurrentWindow()
{
// 描画内容を消しておく
if (current_window_ != UIntPtr.Zero)
{
ExternalAPI.RECT current_rect;
ExternalAPI.GetClientRect(current_window_, out current_rect);
ExternalAPI.InvalidateRect(current_window_, ref current_rect, true);
}
// Graphicsを破棄
if (current_graphics_ != null)
{
current_graphics_.Dispose();
current_graphics_ = null;
}
// DCを破棄
if (current_dc_ != IntPtr.Zero)
{
ExternalAPI.ReleaseDC(current_window_, current_dc_);
current_dc_ = IntPtr.Zero;
}
}
public void SetWindowFromPoint(int screen_x, int screen_y) {
UIntPtr window = ExternalAPI.WindowFromPoint(screen_x, screen_y);
((viewmodel.LayoutParameter)layout_parameters_.Current).SetWindow(window);
}