先說明一下，按鈕控件的消息有很多種，下面的列表是按鈕發(fā)送的消息，其中用的比較多是BN_CLICKED和BN_SETFOCUS和BN_KILLFOUCS

/** User Button Notification Codes*/ #define BN_CLICKED 0 #define BN_PAINT 1 #define BN_HILITE 2 #define BN_UNHILITE 3 #define BN_DISABLE 4 #define BN_DOUBLECLICKED 5 #if(WINVER >= 0x0400) #define BN_PUSHED BN_HILITE #define BN_UNPUSHED BN_UNHILITE #define BN_DBLCLK BN_DOUBLECLICKED #define BN_SETFOCUS 6 #define BN_KILLFOCUS 7 #endif /* WINVER >= 0x0400 */

下面的實例是說明

case BN_CLICKED:
//MessageBox(hWnd,TEXT(“按鈕1被按下”),TEXT(“測試”),MB_OK);
SendMessage(hWndEdit1,WM_CLEAR,0,0);
SendMessage(hWndEdit2,WM_CLEAR,0,0);
break;
case BN_SETFOCUS:
MessageBox(hWnd,TEXT(“按鈕1得到焦點”),TEXT(“測試”),MB_OK);
break;
case BN_KILLFOCUS:
MessageBox(hWnd,TEXT(“按鈕1失去焦點”),TEXT(“測試”),MB_OK);
break;
完整的例子如下：

#include <Windows.h> #include "resource.h"INT_PTR CALLBACK DialogProc(HWND hWnd,UINT uMsg,WPARAM wParam,LPARAM lParam) {BOOL bRet = true;static HWND hWndEdit1 = NULL;static HWND hWndEdit2 = NULL;TCHAR pszBuffer[1024];switch(uMsg){case WM_CLOSE:EndDialog(hWnd,0);break;case WM_COMMAND:hWndEdit1 = GetDlgItem(hWnd,IDC_EDIT1);hWndEdit2 = GetDlgItem(hWnd,IDC_EDIT2);switch(LOWORD(wParam)){case IDC_BUTTON1:switch(HIWORD(wParam)){case BN_CLICKED://MessageBox(hWnd,TEXT("按鈕1被按下"),TEXT("測試"),MB_OK);SendMessage(hWndEdit1,WM_CLEAR,0,0);SendMessage(hWndEdit2,WM_CLEAR,0,0);break;case BN_SETFOCUS:MessageBox(hWnd,TEXT("按鈕1得到焦點"),TEXT("測試"),MB_OK);break;case BN_KILLFOCUS:MessageBox(hWnd,TEXT("按鈕1失去焦點"),TEXT("測試"),MB_OK);break;}break;case IDC_EDIT1:switch(HIWORD(wParam)){case EN_MAXTEXT:break;case EN_UPDATE:GetWindowText(hWndEdit1,pszBuffer,1024);SetWindowText(hWndEdit2,pszBuffer);break;}break;case IDC_BUTTON2:switch(HIWORD(wParam)){case BN_CLICKED:SendMessage(hWndEdit1,WM_COPY,0,0);break;}break;case IDC_BUTTON3:switch(HIWORD(wParam)){case BN_CLICKED:SendMessage(hWndEdit2,WM_PASTE,0,0);break;}break;case IDC_BUTTON4:GetWindowText(hWndEdit1,pszBuffer,1024);MessageBox(hWnd,pszBuffer,TEXT("測試"),MB_OK);break;case IDC_BUTTON5:SetWindowText(hWndEdit2,TEXT("單于大爺"));break;default:return DefWindowProc(hWnd,uMsg,wParam,lParam);}break;default:bRet = FALSE;return bRet;}return bRet; }int APIENTRY WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine,int nCmdShow) {DialogBox(hInstance,MAKEINTRESOURCE(IDD_MAIN),NULL,DialogProc);return 0; }

總結(jié)

以上是生活随笔為你收集整理的主窗口给按钮控件发送消息 BN_CLICKED和BN_SETFOCUS和BN_KILLFOUCS的全部內(nèi)容，希望文章能夠幫你解決所遇到的問題。

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