我正在学习WinAPI并尝试编写Tic Tac Toe游戏。我正在使用按钮,其中将显示X,O或空图像。按钮存储在动态数组(HWND)中。为什么所有这些按钮都具有相同的ID?
if(GetDlgCtrlID(hBtns[0][0]) == GetDlgCtrlID(hBtns[0][1]))
MessageBox(hWndDlg,_T("TheSame"),_T(""),NULL);
MessageBox出现!,为什么。请帮忙。
//KA_SHAG
//Miwa_Mikitin
//XXXOOO
#include<windows.h>
#include<tchar.h>
#include"resource.h"
//Main Proc
BOOL CALLBACK DialogProc(HWND hWndDlg,UINT message,WPARAM wParam,LPARAM lParam);
//EnumChildProc
BOOL CALLBACK DisableEnableButtons(HWND hwnd,LPARAM lParam);
HWND** hBtns;//Global Dynamic Array of Buttons
int size = 150;//Size of Side of field, Button Size = size/nButtons
//BITMAPS
HBITMAP hBmpX,hBmpO,hBmpNone;
/////////
void CreateButtons(HWND hWndDlg,int nBtnsOld,int nBtnsNew);
void LoadBitmaps();
INT WINAPI WinMain(HINSTANCE hIns,HINSTANCE hPrevIns,LPSTR cmdLine,INT nShowCmd)
{
HWND hWndDlg = CreateDialog(hIns,MAKEINTRESOURCE(IDD_DIALOG1),NULL,DialogProc);
MSG msg;
ShowWindow(hWndDlg,1);
while(GetMessage(&msg,NULL,0,0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return msg.wParam;
}
BOOL CALLBACK DialogProc(HWND hWndDlg,UINT message,WPARAM wParam,LPARAM lParam)
{
HINSTANCE hIns = GetModuleHandle(0);
static int nBtnsOld = 5;//intitial N of Buttons on a row|col
static int nBtnsNew;//next update N of Buttons on a row|col
static BOOL isPlaying = false;
static BOOL isMyMove = true;
switch(message)
{
case WM_INITDIALOG:
{
LoadBitmaps();
CreateButtons(hWndDlg,nBtnsOld,nBtnsOld);
}
return true;
case WM_COMMAND:
if(HIWORD(wParam) == BN_CLICKED)
{
//Resize the Button field
if(LOWORD(wParam) == IDC_BTNSETSIZE)
{
//Determine wich RadioBtn is Checked
if(IsDlgButtonChecked(hWndDlg,IDC_RADIO33))
nBtnsNew = 3;//set new nBtns
if(IsDlgButtonChecked(hWndDlg,IDC_RADIO44))
nBtnsNew = 4;//set new nBtns
if(IsDlgButtonChecked(hWndDlg,IDC_RADIO55))
nBtnsNew = 5;//set new nBtns
///////////////////////////////////////////
//If no difference than ignore
//else Create new Array of Btns
if(nBtnsOld != nBtnsNew)
{
CreateButtons(hWndDlg,nBtnsOld,nBtnsNew);
nBtnsOld = nBtnsNew;
}
/////////////////////////////////////////
return true;
}
if(LOWORD(wParam) == IDC_BTNBEGIN)
{
//Enum Buttons,CheckBox,RadioBtns
//then Disable or Enable them depending on isPlaying var
//if TRUE - ENABLE
//else Disable
EnumChildWindows(hWndDlg,DisableEnableButtons,isPlaying);
//switch isPlaying )
isPlaying = !isPlaying;
//switch begin Button Text
if(isPlaying)
SetWindowText(GetDlgItem(hWndDlg,IDC_BTNBEGIN),_T("Закінчити гру"));
else
SetWindowText(GetDlgItem(hWndDlg,IDC_BTNBEGIN),_T("Почати гру"));
/////////////////////////////////////////////////////////////////////
return true;
}
//When Playing
if(isPlaying)
{
//Determine HWND of Pressed Btn
HWND pressedBtn = GetDlgItem(hWndDlg,LOWORD(wParam));
HBITMAP propBmp;
if(isMyMove)
propBmp = hBmpX;
else
propBmp = hBmpO;
//Change BMP
SendMessage(pressedBtn,
BM_SETIMAGE,IMAGE_BITMAP,
(LPARAM)propBmp);
//WHY???
if(GetDlgCtrlID(hBtns[0][0]) == GetDlgCtrlID(hBtns[0][1]))
MessageBox(hWndDlg,_T("TheSame"),_T(""),NULL);
return true;
}
}
return true;
case WM_CLOSE:
DestroyWindow(hWndDlg);
PostQuitMessage(0);
return TRUE;
}
return FALSE;
}
void CreateButtons(HWND hWndDlg,int nBtnsOld,int nBtnsNew)
{
HINSTANCE hIns = GetModuleHandle(0);//main instance
//Destroy Buttons
if(hBtns)
{
for(int i=0;i<nBtnsOld;i++)
for(int j=0;j<nBtnsOld;j++)
DestroyWindow(hBtns[i][j]);
////////////////////////////////
//Free memory
for(int n=0;n<nBtnsOld;n++)
delete[]hBtns[n];
delete[]hBtns;
}
/////////////////////////////////
//Allocate new memory
hBtns = new HWND*[nBtnsNew];
for(int n=0;n<nBtnsNew;n++)
hBtns[n] = new HWND[nBtnsNew];
////////////////////////////////
int x =0;//offset x
int y =0;//offset y
//tchar[] for diff name s of btns
//Create Buttons & assign to hBtns Array
for(int i=0;i<nBtnsNew;i++)
{
for(int j=0;j<nBtnsNew;j++)
{
hBtns[i][j] = CreateWindowEx(
NULL,_T("Button"),
NULL,
WS_CHILD | WS_VISIBLE | BS_BITMAP | BS_NOTIFY ,
x,y,size/nBtnsNew,size/nBtnsNew,
hWndDlg,NULL,
hIns,NULL);
//Set Default Image On Btns
SendMessage(hBtns[i][j],BM_SETIMAGE,IMAGE_BITMAP,(LPARAM)hBmpNone);
x+=size/nBtnsNew;
}
y+=size/nBtnsNew;
x=0;
}
}
BOOL CALLBACK DisableEnableButtons(HWND hwnd,LPARAM lParam)
{
//Lparam is a BOOL if true Button will be Enabled
//else Buttons will be Disabled
if( GetDlgCtrlID(hwnd) == IDC_RADIO33 ||
GetDlgCtrlID(hwnd) == IDC_RADIO44 ||
GetDlgCtrlID(hwnd) == IDC_RADIO55 ||
GetDlgCtrlID(hwnd) == IDC_CHECKMOVE ||
GetDlgCtrlID(hwnd) == IDC_BTNSETSIZE)
EnableWindow(hwnd,lParam);//<---lParam is BOOL
return TRUE;
}
//BOOL CALLBACK DrawBmpOnBtn(HWND hwnd,LPARAM lParam)
//{
//
// SendMessage(hwnd,BM_SETIMAGE,
// return TRUE;
//}
void LoadBitmaps()
{
HINSTANCE hIns = GetModuleHandle(0);//main instance
hBmpX = LoadBitmap(hIns,MAKEINTRESOURCE(IDB_BMP_X));
hBmpO = LoadBitmap(hIns,MAKEINTRESOURCE(IDB_BMP_O));
hBmpNone = LoadBitmap(hIns,MAKEINTRESOURCE(IDB_BMP_NONE));
}
项目(VS2008)在这里:http://www.filehosting.org/file/details/372626/XXXOOO.rar
P.S.执行程序时 - 下方按钮允许绘制蓝色按钮,上方按钮设置蓝色按钮的数量,但检查一些radioBtn。答案 0 :(得分:4)
按钮句柄不相等,但您尚未为它们设置控件ID。您可以通过在CreateWindowEx
的调用中添加以下内容来完成此操作:
hBtns[i][j] = CreateWindowEx(
NULL, _T("Button"),
NULL,
WS_CHILD | WS_VISIBLE | BS_BITMAP | BS_NOTIFY,
x, y, size/nBtnsNew, size/nBtnsNew,
hWndDlg,
(HMENU)<your_control_id>,
hIns, NULL);
您必须使用每个按钮的唯一ID替换<your_control_id>
部分。
我的猜测是GetDlgCtrlID()
调用失败,因此返回0.详细了解GetDlgCtrlID()
和CreateWindowEx()
答案 1 :(得分:2)
不会自动分配控制ID。将控件ID作为HMENU
参数传递给CreateWindow
(这在the documentation for CreateWindow
中提到,但没有详细说明)。
通常,设置它们的方法只是在资源编辑器中创建对话框,并为每个子窗口提供一个控件ID,然后在运行时使用该ID来查找每个子窗口的HWND
。但是当你自己创建子窗口时,你已经拥有了HWND
个,所以你也可以直接使用它。这并不难编写代码,但更容易保持最佳状态 - 例如,如果添加更多控件,则无需在任何地方添加更多ID。
当收到WM_COMMAND
消息,其中包含WPARAM
中的窗口对话框ID时,您可以从HWND
获取LPARAM
,并确定您的子窗口相反的方式。请参阅the documentation for WM_COMMAND
。