多编辑框响应回车键处理

1. 在编辑框所在对话框类下重构PreTranslateMessage函数：

注意：要通过Class Wizard来重构，自己添加编写会报溢出错误。



2. 在PreTranslateMessage函数中，区分出回车消息，以及区分出各编辑框的回车消息。

2.1 通过pMsg->wParam区分出回车消息：

switch(pMsg->wParam)

{

case VK_RETURN:

case VK_ESCAPE:

return TRUE;

break;

}

2.2 通过pMsg->wParam区分出具体是那个编辑框的回车操作：

// get red gray edit enter key

if ( (pMsg->hwnd) == (GetDlgItem(IDC_EDIT_FPGASETDLG_GRAYRED)->m_hWnd)
)

{

......

}

实例参考程序如下，本例为slabHID项目中，FPGASetting对话框，各灰阶编辑框的回车处理操作：

BOOL CFPGASetting::PreTranslateMessage(MSG* pMsg)
{
// TODO: Add your specialized code here and/or call the base class

switch(pMsg->wParam)
{
case VK_RETURN:
{
if ( (pMsg->hwnd) == (GetDlgItem(IDC_EDIT_FPGASETDLG_GRAYRED)->m_hWnd) )			// get red gray edit enter key
{
fpgagrayflag = GetDlgItemInt(IDC_EDIT_FPGASETDLG_GRAYRED);
if ((fpgagrayflag<0)|(fpgagrayflag>255))
AfxMessageBox("The value over range, please fill again");
else
{
m_cscrollbar_FPGADlg_rgray.SetScrollPos(fpgagrayflag);

fpgaPatflag = FPGA_R_PAT;

MakeGrayAdjPacket(fpgaPatflag,fpgagrayflag,Write_HID_Buf);

flag_FpgaDlgtoMainDlg = FPGADLGSENDDATA;
fpgaCallMainMsg();
}
}
else
{
if ((pMsg->hwnd) == (GetDlgItem(IDC_EDIT_FPGASETDLG_GRAYGREEN)->m_hWnd))		// get green gray edit enter key
{
fpgagrayflag = GetDlgItemInt(IDC_EDIT_FPGASETDLG_GRAYGREEN);
if ((fpgagrayflag<0)|(fpgagrayflag>255))
AfxMessageBox("The value over range, please fill again");
else
{
m_cscrollbar_FPGADlg_ggray.SetScrollPos(fpgagrayflag);

fpgaPatflag = FPGA_G_PAT;

MakeGrayAdjPacket(fpgaPatflag,fpgagrayflag,Write_HID_Buf);

flag_FpgaDlgtoMainDlg = FPGADLGSENDDATA;
fpgaCallMainMsg();
}
}
else
{
if ((pMsg->hwnd) == (GetDlgItem(IDC_EDIT_FPGASETDLG_GRAYBLUE)->m_hWnd))		// get blue gray edit enter key
{
fpgagrayflag = GetDlgItemInt(IDC_EDIT_FPGASETDLG_GRAYBLUE);
if ((fpgagrayflag<0)|(fpgagrayflag>255))
AfxMessageBox("The value over range, please fill again");
else
{
m_cscrollbar_FPGADlg_bgray.SetScrollPos(fpgagrayflag);

fpgaPatflag = FPGA_B_PAT;

MakeGrayAdjPacket(fpgaPatflag,fpgagrayflag,Write_HID_Buf);

flag_FpgaDlgtoMainDlg = FPGADLGSENDDATA;
fpgaCallMainMsg();
}
}
else
{
if ((pMsg->hwnd) == (GetDlgItem(IDC_EDIT_FPGASETDLG_GRAYWHITE)->m_hWnd))// get white gray edit enter key
{
fpgagrayflag = GetDlgItemInt(IDC_EDIT_FPGASETDLG_GRAYWHITE);
if ((fpgagrayflag<0)|(fpgagrayflag>255))
AfxMessageBox("The value over range, please fill again");
else
{
m_cscrollbar_FPGADlg_wgray.SetScrollPos(fpgagrayflag);

fpgaPatflag = FPGA_W_PAT;

MakeGrayAdjPacket(fpgaPatflag,fpgagrayflag,Write_HID_Buf);

flag_FpgaDlgtoMainDlg = FPGADLGSENDDATA;
fpgaCallMainMsg();
}
}
}
}
}
}
case VK_ESCAPE:
return TRUE;
break;
}

return CDialog::PreTranslateMessage(pMsg);
}

注意事项：在PreTranslateMessage函数中，区分按键的部分，即

switch(pMsg->wParam)

{

case VK_RETRUN:

......

case VK_ESCAPE:

......

retrun TRUE;

break;

}中，一定要注意返回值为TRUE，这句不能省略。

另，对编辑框回车键的处理可以参考下文：

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