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Moving From Top To Bottom in Detailed Block in Oracle Forms

Suppose you want to scan a tabular grid block (loop through all records in detail block) from top to bottom in Oracle forms. You can do this task by using :system.last_record system variable to determine whether it is last record in a block and then…

Writing Text File From A Tabular Block In Oracle Forms

The example given below for writing text file or CSV using Text_IO package from a tabular block in Oracle Forms.   Suppose there is a tabular grid data block "Job_History" in your forms and you want to write a CSV on click of a button by reading…

Copy Records From One Data Block To Another Data Block In Oracle Forms

In this tutorial you will learn to copy the records from one data block to another data block on same form and on a same canvas in Oracle Forms. Below is the screen shot of the form and you can download this form for your reference from the following…

Sort Detail Data Block Example - Oracle Forms

Example is given below to sort detail data block data (toggle asc or desc) with push buttons used as header of grid, by setting ORDER_BY property of data block using SET_BLOCK_PROPERTY command.   The following is the screen shot of this example and t…

Determining Current Block and Current Item in Oracle Forms

SYSTEM.CURSOR_BLOCK Determining current block in Oracle Forms Using SYSTEM.CURSOR_BLOCK system variable. The value that the SYSTEM.CURSOR_BLOCK system variable represents depends on the current navigation unit:If the current navigation unit is the bl…

margin的auto的理解 top,left[,bottom,right] position

auto auto 总是试图充满父元素 margin有四个值: All the margin properties can have the following values: auto - the browser calculates the marginlength - specifies a margin in px, pt, cm, etc.% - specifies a margin in % of inherit - specifies that the margin should…

关于定位中left和right，top和bottom的权重问题

关于定位中left和right,top和bottom的权重问题 在共同类中设置了定位并且设置了left等定位,如果你引用这个类并加入其他的类中也有left和right等定位,那么你设置的right或是bottom将会无效. 原因:因为在定位中,left比right的权重高,top比bottom权重高,所以才无效果 解决办法:在共同的类中把left设置为:left:auto或者是把left属性删除,各自的类设置并无互相影响: 案例分析: 在轮播图中,给两个盒子向前向后按钮同时添加一个共同的定位le…

The Portable Executable File Format from Top to Bottom（每个结构体都非常清楚）

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定位（left 、right 、top 、 bottom）、padding、margin 值设为百分比值时

定位(left .right .top . bottom): top 为例 right 为例 padding.margin : 当padding.margin 值设为百分比值时,其百分比会相对于父元素的宽度 Width .不论是上下内外边距,还是左右内外边距,均是相对于其父元素的宽度 Width .即上下内外边距与左右内外边距一致:即上下内外边距的百分数会相对于父元素宽度设置,而不是相对于高度.…

top:0;bottom:0;left:0;right:0;同时使用的效果

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