SDK，菜鸟关于CreateDialog的Dialog中动态创建按钮的疑问

[desatan]

#include <windows.h>
#include "resource.h"

LRESULT CALLBACK DiagFunc(HWND,UINT,WPARAM,LPARAM);

int __stdcall WinMain(HINSTANCE hInst,HINSTANCE hPrevInst,LPSTR lpCmdLine,int nShowCmd)
{
	HWND hwnd,hb;
	MSG msg;
	hwnd=CreateDialog(hInst,(LPCTSTR)IDD_DIALOG,NULL,(DLGPROC)DiagFunc);
hb=CreateWindowEx(  
		NULL,  
		"Button",  
		"Button",  
		WS_CHILD|WS_VISIBLE,  
		10,10,65,22,  
		hwnd,  
		(HMENU)1001,  
        hInst,  
		NULL); 

	ShowWindow(hwnd,SW_NORMAL);
	UpdateWindow(hwnd);
	
	while(GetMessage(&msg,NULL,0,0))
	{
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}
	return msg.wParam;
}

LRESULT CALLBACK DiagFunc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam)
{
	switch(message){
	
		case WM_CREATE:
			
			MessageBox(hwnd,"Hello","Hello",MB_OK);
			
			break;
		case WM_INITDIALOG:
			//SetWindowPos(hwnd,HWND_TOP,100,100,500,600,SWP_SHOWWINDOW);
			
			break;
		case WM_DESTROY:
			MessageBox(hwnd,"Hello","Hello",MB_OK);
			PostQuitMessage(0);
			break;
		case WM_CLOSE:
			DestroyWindow(hwnd);
			return TRUE;
	}
	return FALSE;
}

动态创建发生在WinMain中CreateDialog之后，可成功创建一个按钮

=======================================================================================================

#include <windows.h>
#include "resource.h"

LRESULT CALLBACK DiagFunc(HWND,UINT,WPARAM,LPARAM);

int __stdcall WinMain(HINSTANCE hInst,HINSTANCE hPrevInst,LPSTR lpCmdLine,int nShowCmd)
{
	HWND hwnd;
	MSG msg;
	hwnd=CreateDialog(hInst,(LPCTSTR)IDD_DIALOG,NULL,(DLGPROC)DiagFunc);
	

	ShowWindow(hwnd,SW_NORMAL);
	UpdateWindow(hwnd);
	
	while(GetMessage(&msg,NULL,0,0))
	{
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}
	return msg.wParam;
}

LRESULT CALLBACK DiagFunc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam)
{
	switch(message){
	
		case WM_CREATE:
			
MessageBox(hwnd,"Hello","Hello",MB_OK);
			CreateWindowEx(  
				NULL,  
				"Button",  
				"Button",  
				WS_CHILD|WS_VISIBLE,  
				10,10,65,22,  
				hwnd,  
				(HMENU)1001,  
				((LPCREATESTRUCT)lParam)->hInstance,  
				NULL);  
			break;
		case WM_INITDIALOG:
			//SetWindowPos(hwnd,HWND_TOP,100,100,500,600,SWP_SHOWWINDOW);
			
			break;
		case WM_DESTROY:
			
			PostQuitMessage(0);
			break;
		case WM_CLOSE:
			DestroyWindow(hwnd);
			return TRUE;
	}
	return FALSE;
}

在WM_CREATE中不能创建按钮（不能显示按钮）， MessageBox(hwnd,"Hello","Hello",MB_OK); 也不会被执行。是否CreateDialog不会产生WM_CREATE消息？如果我想在Dialog创建（即产生WM_CREATE或类似消息)时动态创建按钮该怎么办？

[菜牛]

对于对话框在WM_INITDIALOG中初始化你的数据，创建你的按钮。

[desatan]

[Quote=引用 1 楼 Mackz 的回复:]
对于对话框在WM_INITDIALOG中初始化你的数据，创建你的按钮。
[/Quote]
报错。弹出一个调试错误的对话框。
dialog.exe 遇到问题需要关闭。我们对此引起的不便表示抱歉。
AppName: dialog.exe AppVer: 0.0.0.0 ModName: dialog.exe
ModVer: 0.0.0.0 Offset: 0000114c

Loaded symbols for 'F:\proj\dialog\Debug\dialog.exe'
Loaded 'C:\WINDOWS\system32\ntdll.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\kernel32.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\user32.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\gdi32.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\imm32.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\advapi32.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\rpcrt4.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\secur32.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\lpk.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\usp10.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\msvcrt.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\guard32.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\ole32.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\version.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\fltlib.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\UXTHEME.DLL', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\MSCTF.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\MSCTFIME.IME', no matching symbolic information found.
Loaded 'C:\WINDOWS\WinSxS\x86_Microsoft.Windows.Common-Controls_6595b64144ccf1df_6.0.2600.2982_x-ww_ac3f9c03\comctl32.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\shlwapi.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\apphelp.dll', no matching symbolic information found.
The thread 0xF2C has exited with code 0 (0x0).
The thread 0xEE0 has exited with code -1073741819 (0xC0000005).
The program 'F:\proj\dialog\Debug\dialog.exe' has exited with code -1073741819 (0xC0000005).

[desatan]

找到解释了 http://topic.csdn.net/u/20070822/16/b7a240c4-c72f-4d46-aa8f-ee9f1b3ec56c.html

谢谢Mackz