WINAPI ListView控件不能调整prevent列 [英] Winapi ListView can't prevent columns from resizing
问题描述
我试图创造与WINAPIÇ固定宽度列的ListView ++项目。
I'm trying to create ListView with fixed width columns in winapi C++ project.
我尝试使用一招只在它返回TRUE处理的对话框程序一个HDN_BEGINTRACK通知。当我从不同的文章了解它可能工作。
I try use a trick with handling a HDN_BEGINTRACK notification in Dialog Box Procedure just by returning TRUE in it. As I understood from different articles it might work.
点是,我赶上了,但返回TRUE调整大小不是做prevent。
Point is, that I catch it, but returning TRUE does not prevent from resizing.
也试过刚开WM_NOTIFY之后返回TRUE - 同样的效果。
Also tried returning TRUE just after getting WM_NOTIFY - the same effect.
请帮助我。以下是code的某些部分:
Help me please. Here are some parts of code:
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
hInst = hInstance;
----
hDlg = CreateDialog(hInst,MAKEINTRESOURCE(IDD_DIALOG),
hWnd,(DLGPROC)DlgProc);
INITCOMMONCONTROLSEX icex;
icex.dwICC = ICC_LISTVIEW_CLASSES;
InitCommonControlsEx(&icex);
HWND hWndListView = CreateWindow(
WC_LISTVIEW,
L"",
WS_CHILD | LVS_REPORT |WS_VISIBLE,
0, 0,
382,
200,
hDlg,
(HMENU)IDC_LIST,
hInst,
NULL);
----
//adding columns and items
----
DWORD exStyle = LVS_EX_CHECKBOXES | LVS_EX_FULLROWSELECT | LVS_EX_GRIDLINES;
ListView_SetExtendedListViewStyle(hWndListView,exStyle);
SetWindowTheme(hWndListView, L"Explorer", NULL);
----
return TRUE;
}
BOOL CALLBACK DlgProc(HWND hDlg, UINT Msg, WPARAM wParam, LPARAM lParam)
{
switch (Msg)
{
----
case WM_NOTIFY:
switch(((LPNMHDR)lParam)->code)
{
case HDN_BEGINTRACK:
OutputDebugString(L"HDN_BEGINTRACK\n");
return TRUE;
default:
break;
}
----
}
return FALSE;
}
在此先感谢!
推荐答案
在对话框过程只显示你处理消息从WM_NOTIFY返回TRUE。要真正返回一个结果值,还必须设置对话框的 DWL_MSGRESULT
:
Returning TRUE from WM_NOTIFY in a dialog procedure only shows you've processed the message. To actually return a result value, you must also set the dialog's DWL_MSGRESULT
:
case HDN_BEGINTRACK:
OutputDebugString(L"HDN_BEGINTRACK\n");
SetWindowLong(hDlg, DWL_MSGRESULT, TRUE); // prevent resizing
return TRUE; // message processed; check DWL_MSGRESULT for real result
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