1、正确： SendMessage(HWND, WM_LBUTTONDOWN, 0, 0); //鼠标左键按下 Sleep(10); SendMessage(HWND, WM_LBUTTONUP, 0, 0); //鼠标左键放开
错误 PostMessage(HWND, WM_LBUTTONDOWN, 0, 0); Sleep(10); PostMessage(HWND, WM_LBUTTONUP, 0, 0);
2、按键 按下和弹起 必须用SendMessage
推荐使用此消息 SendMessage(HWND, BM_CLICK, 0, 0); //模拟单击某按钮 BM即button message
另一种点击按钮的方法 SendMessage(HWND_Button, WM_KEYDOWN, VK_SPACE, 0); //按下空格 相当于点击按钮 Sleep(10); SendMessage(HWND_Button, WM_KEYUP, VK_SPACE, 0); //放开空格 相当于点击按钮
3、SendMessage(HWND_Button, WM_SETFOCUS, 0, 0); //给按钮设置一下焦点SendMessage(TreeView.Handle,TVM_SETBKCOLOR,0,RGB(255,0,0)); 设置TV背景颜色SendMessage(Button.Handle,WM_LBUTTONDOWN,0,0); 鼠标左键按下SendMessage(Button.Handle,WM_LBUTTONUP,0,0); 鼠标左键抬起SendMessage(Edit.Handle,WM_SETTEXT,255,Integer(PChar('abc'))); 传递文本SendMessage(Edit.Handle,WM_Char,Wparam('Q'),2); 传递字符SendMessage(Button.Handle,BM_SETSTYLE,BS_RADIOBUTTON,1); 改变Button风格SendMessage(ComboBox.Handle,CB_SETDropPEDWIDTH,300,0); 改变CBDownWidth
