急！求教用SendDlgItemMessage()发送CB_ADDSTRING消息给combox为什么没有效果，总是返回零?

[CGS]

求教用SendDlgItemMessage()发送CB_ADDSTRING消息给combox为什么没有效果，总是返回零?

[CGS]

代码大致如下：
#include <windows.h>
#include "CSTimer.h"
#include "resource.h"

HINSTANCE hIns;

int APIENTRY WinMain(HINSTANCE hinstExe,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)
{
int r=0;

hIns=hinstExe;

r=DialogBox(hinstExe, (LPCTSTR)IDD_MAIN, NULL, (DLGPROC)MainProc);
if (r==-1)
{
MessageBox(0,"打开主制板失败!","致命错误",MB_OK | MB_ICONERROR);
return 0;
}

return 0;
}

LRESULT CALLBACK MainProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WM_INITDIALOG:
SetClassLong(hwnd,GCL_HICON,(long)LoadIcon(hIns,(LPCTSTR)IDI_ICON_LOGO));
//AddTrayIcon(hwnd);
return TRUE;

case WM_ICON:
switch((UINT)lParam)
{
case WM_RBUTTONDOWN:
POINT point;
GetCursorPos(&point);
Main_OnIcon(hwnd,point.x,point.y);
}
return TRUE;
case WM_COMMAND:
WORD wp=LOWORD(wParam);
switch(wp)
{
case IDCANCEL:
case MENU_QUITMAIN:
EndDialog(hwnd, LOWORD(wParam));
return TRUE;
break;

case IDOK:
{
//One.
SendDlgItemMessage(hwnd,IDC_EVENTTYPE,CB_ADDSTRING,0,(LPARAM)(LPCTSTR)"This is Test!");

//Two
HWND hcmb=GetDlgItem(hwnd,IDC_EVENTTYPE);
SendMessage(hcmb,CB_ADDSTRING,0,(LPARAM)(LPCTSTR)"This is Test!");

//char buffer[20];
//_ltoa((long)hcmb,buffer,10);
//MessageBox(0,buffer,"dfsdf",MB_OK);
break;
}
}
break;
}
return (FALSE);
}

rc文件片断如下：
IDD_MAIN DIALOG DISCARDABLE 0, 0, 198, 51
STYLE WS_MINIMIZEBOX | WS_CAPTION | WS_SYSMENU
CAPTION "定时关机主制板"
FONT 9, "宋体"
BEGIN
DEFPUSHBUTTON "确定(&O)",IDOK,112,31,39,14,BS_FLAT
PUSHBUTTON "取消(&C)",IDCANCEL,156,31,37,14,BS_FLAT
LTEXT "类型:",IDC_STATIC1,10,6,21,11
LTEXT "时间:",IDC_STATIC,94,6,21,9
EDITTEXT IDC_EDIT_TIME,117,3,59,13,ES_AUTOHSCROLL
SCROLLBAR IDC_SR_TIME,177,3,14,12,SBS_VERT
CONTROL "启动时自动运行。",IDC_CHECK_AUTORUN,"Button",
BS_AUTOCHECKBOX | WS_TABSTOP,11,35,75,10
COMBOBOX IDC_EVENTTYPE,31,3,57,12,CBS_DROPDOWN | CBS_AUTOHSCROLL |
CBS_SORT | WS_VSCROLL | WS_TABSTOP
END
CB_ADDSTRING无效？

[realfly]

把代码帖上来

[UDX协议]

从以下方面作手，一是，你的COMBOBOX是否创建，二是，你创建的id是否指对了，三是，COMBOBOX风格是否有hasstring。再就是你加进去的字符串是否正确。

[CGS]

快点来帮忙指点一下啊!（在线等待）。

[CGS]

怎么没人帮我啊！