?? createdc.htm
字號:
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<meta name="GENERATOR" content="Microsoft FrontPage 3.0">
<style><!--
body,table {font-family:"宋體"; font-size: 9pt; line-height:11pt;}
a {text-decoration:none} a:hover {color:red;text-decoration:underline}
--></style>
<title>CreateDC</title>
</head>
<body link="#FF0000" vlink="#FF0000" alink="#FF0000" bgcolor="#FFC8C8">
<div align="center"><center>
<table border="0" width="100%" height="22" cellspacing="0" cellpadding="0">
<tr>
<td width="100%" height="16"><a name="CreateDC">CreateDC</a>, CreateDCBynum</td>
</tr>
</table>
</center></div><div align="center"><center>
<table border="1" width="100%" bordercolorlight="#808080" cellspacing="0"
bordercolordark="#FFFFFF">
<tr>
<td width="100%" colspan="2">VB聲明</td>
</tr>
<tr>
<td width="100%" colspan="2">Declare Function CreateDC& Lib "gdi32" Alias
"CreateDCA" (ByVal lpDriverName As String, ByVal lpDeviceName As String, ByVal
lpOutput As String, lpInitData As DEVMODE)<br>
Declare Function CreateDCBynum& Lib "gdi32" Alias "CreateDCA"
(ByVal lpDriverName As String, ByVal lpDeviceName As String, ByVal lpOutput As String,
lpInitData As Long)</td>
</tr>
<tr>
<td width="100%" colspan="2">說明</td>
</tr>
<tr>
<td width="100%" colspan="2">為專門設備創建設備場景</td>
</tr>
<tr>
<td width="100%" colspan="2">返回值</td>
</tr>
<tr>
<td width="100%" colspan="2">Long，新設備場景句柄，若出錯則為零</td>
</tr>
<tr>
<td width="100%" colspan="2">參數表</td>
</tr>
<tr>
<td width="25%">參數</td>
<td width="75%">類型及說明</td>
</tr>
<tr>
<td width="25%">lpDriverName</td>
<td width="75%">String，用vbNullString傳遞null值給該參數，除非：1、用DISPLAY，是獲取整個屏幕的設備場景；2、用WINSPOOL，則是訪問打印驅動</td>
</tr>
<tr>
<td width="25%">lpDeviceName</td>
<td width="75%">String，所用專門設備的名稱。該名由打印管理器分配顯示</td>
</tr>
<tr>
<td width="25%">lpOutput</td>
<td width="75%">String，用vbNullString傳遞null值給該參數</td>
</tr>
<tr>
<td width="25%">lpInitData</td>
<td width="75%"><a href="DEVMODE.htm">DEVMODE</a>，這個結構保存初始值。用CreateDCBynum傳遞0（NULL）值則適用默認設置</td>
</tr>
<tr>
<td width="100%" colspan="2">注解</td>
</tr>
<tr>
<td width="100%" colspan="2"><p align="left">在繪制之前，先要為該設備場景選定一個位圖。不再需要時，該設備場景可用<a
href="DeleteDC.htm">DeleteDC</a>函數刪除。刪除前，其所有對象應回復初始狀態。若有設備初始設置可用DocumentProperties
API函數載入DEVMODE結構。使用屏幕設備場景（DISPLAY）時要小心，因為它會干擾其他應用程序的外觀</td>
</tr>
<tr>
<td width="100%" colspan="2">示例：靠近屏幕左上角畫一個矩形</td>
</tr>
<tr>
<td width="100%" colspan="2">dc& = CreateDCBynum("DISPLAY", vbNullString,
vbNullString, 0)<br>
dl& = Rectangle(dc&, 5, 5, 100, 100)</td>
</tr>
</table>
</center></div><div align="center"><center>
<table border="0" width="100%" cellspacing="0" cellpadding="0">
<tr>
<td width="100%"><p align="right"><a href="#CreateDC">Top</a></td>
</tr>
</table>
</center></div>
</body>
</html>
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -