protected override void OnHandleDestroyed(EventArgs e)
{
GDI.DeleteDC(FMemDC);
User.ReleaseDC(this.Handle, FDC);
Imm.ImmReleaseContext(this.Handle, FhImc);
base.OnHandleDestroyed(e);
}
protected override void CreateHandle()
{
base.CreateHandle();
if (!DesignMode)
{
FCaret = new HCCaret(this.Handle);
}
if (FDC == IntPtr.Zero)
{
FDC = User.GetDC(this.Handle);
//FMemDC = (IntPtr)GDI.CreateCompatibleDC(FDC);
}
FhImc = Imm.ImmGetContext(this.Handle);
}
private void UpdateImmPosition()
{
// 全局 FhImc
LOGFONT vLogFont = new LOGFONT();
Imm.ImmGetCompositionFont(FhImc, ref vLogFont);
vLogFont.lfHeight = 22;
Imm.ImmSetCompositionFont(FhImc, ref vLogFont);
// 告诉输入法当前光标位置信息
COMPOSITIONFORM vCF = new COMPOSITIONFORM();
vCF.ptCurrentPos = new POINT(FCaret.X, FCaret.Y + 5); // 输入法弹出窗体位置
vCF.dwStyle = 1;
Rectangle vr = this.ClientRectangle;
vCF.rcArea = new RECT(vr.Left, vr.Top, vr.Right, vr.Bottom);
Imm.ImmSetCompositionWindow(FhImc, ref vCF);
}
protected override void WndProc(ref Message Message)
{
switch (Message.Msg)
{
case User.WM_GETDLGCODE:
Message.Result = (IntPtr)(User.DLGC_WANTTAB | User.DLGC_WANTARROWS);
return;
case User.WM_ERASEBKGND:
Message.Result = (IntPtr)1;
return;
case User.WM_SETFOCUS:
case User.WM_NCPAINT:
base.WndProc(ref Message);
FStyle.UpdateInfoReCaret(false);
FStyle.UpdateInfoRePaint();
CheckUpdateInfo();
return;
case User.WM_KILLFOCUS:
base.WndProc(ref Message);
if (Message.WParam != Handle)
{
FCaret.Hide();
}
return;
case User.WM_IME_SETCONTEXT:
if (Message.WParam.ToInt32() == 1)
{
Imm.ImmAssociateContext(this.Handle, FhImc);
}
break;
case User.WM_IME_COMPOSITION:
if ((Message.LParam.ToInt32() & Imm.GCS_RESULTSTR) != 0)
{
if (FhImc != IntPtr.Zero)
{
int vSize = Imm.ImmGetCompositionString(FhImc, Imm.GCS_RESULTSTR, null, 0);
if (vSize > 0)
{
byte[] vBuffer = new byte[vSize];
Imm.ImmGetCompositionString(FhImc, Imm.GCS_RESULTSTR, vBuffer, vSize);
string vS = System.Text.Encoding.Default.GetString(vBuffer);
if (vS != "")
{
FData.InsertText(vS);
FStyle.UpdateInfoRePaint();
FStyle.UpdateInfoReCaret();
CheckUpdateInfo();
return;
}
}
Message.Result = IntPtr.Zero;
}
}
break;
case User.WM_LBUTTONDOWN:
case User.WM_LBUTTONDBLCLK:
if ((!DesignMode) && (!this.Focused))
{
User.SetFocus(Handle);
if (!Focused)
{
return;
}
}
break;
}
base.WndProc(ref Message);
}